Company Directory

7 Company Directory All manufacturers of products and suppliers of services listed in Sections 2, 3 and 4 are listed alphabetically in this section. The complete address of each company is given and the telephone number when available. Listings of this section begin on page 275

7

Company Directory

Aalborg Instruments & Controls, Inc., 57 Regina Rd., Monsey, N. Y. 10952. (914) 352-3171 A & H Engineering Corp., 1501 N. Main, P.O. Box 2176, E. Peoria, III. 61611. (309) 694-4311 Aardvark Instruments, Inc., 1S 176 Rochdale Circle, L o m b a r d , 111.60148.

(312) 627-0665 Abar Corp., 905 Pennsylvania Blvd., Feasterville, Pa. 19047. (215) 355-4900 Paul O. Abbe, Inc., 385 Center Ave., Little Falls, N. J. 07424. (201) 256-4242 Abbeon Cal, Inc., 123 Gray Ave., Santa Barbara, Calif. 9 3 1 0 1 . (805) 966-0810 ABBOTT, Scientific Products Div., 820 Mission St., S. Pasadena, Calif. 91030. (213) 441-1171 Acco, Bristol Div., 40 Bristol St., Waterbury, Conn. 06720. (203) 756-4451 Acco, Datamaster Div., 85 Hazel St., Glen Cove, Ν. Υ. 11542. (516) 676-7300 Acco, Helicoid Gage Div., 929 Connecticut Ave., Bridgeport, Conn. 06602. (203)335-2511 Acco, Wilson Instrument Div., 929 Connecticut Ave., Bridgeport, Conn. 06602. (203)335-2511 Accu-Labs Research, Inc., 9170 W. 44th Ave., Wheat Ridge, Colo. 80033. (303) 421-9590 Ace Glass, Inc., 1430 N. West Blvd., Vineland, N. J. 08360. (609) 692-3333 Ace Pump Corp., 1650 Channel Ave., Memphis, Tenn. 38113. (901) 948-8514 Acheson Colloids Co., 1635 Washington Ave., Port Huron, Mich. 48060. (313) 984-5581 Adams-Smith, Inc., P. O. Box 363, Needham, Mass. 02192. (617) 263-1400 Adam Systems, Inc., Rt. 73 & Morris Ave., Maple Shade, N . J . 08052. (609) 779-2640 Advanced Dynamic Instruments, Div. of Electrodyne, Inc., 2316 Jefferson Davis Hwy., Alexandria, Va. 22313. (703) 836-4641 Advanced Instruments, Inc., 1000 Highland Ave., Needham Heights, Mass. 02194. (617)449-3000 Advanced Metals Research Corp., 160 Middlesex Tpk., Bedford, Mass. 01730. (617) 275-1400 The Advanced Products Co., 33 Defco Park Rd., N. Haven, Conn. 06473. (203) 239-3341 ΑΕΙ Scientific Apparatus Inc., 500 Executive Blvd., Elmsford, Ν. Υ. 10523. (914) 592-4620 AEL, Inc., P. O. Box 552, Lansdale, Pa. 19446. (215)822-2929 Aero Chemical Corp., P. O. Box 5086, 70 Blanchard St., Newark, N. J. 02105

(201) 589-6325

Aerotest Operations, Inc. 3455 Fostoria Way, San Ramon, Calif. 94583. (415) 837-4248 Aero Vac Products, S. Bedford St., Burlington, Mass. 01803. (617) 272-0765 Ainsworth, Inc., 2050 S. Pecos St., Denver, Colo. 80223. (303)934-2135 Airco Cryogenics, Div. of Airco, Inc., 1900 Main St., Irvine, Calif. 92664. (714) 540-3010 Airco Industrial Gases, 575 Mountain Ave., Murray Hill, N . J . 07974. (201) 464-8100 Airco Temescal, 2850 Seventh St., Berkeley, Calif. 94710. (415) 841-5720 Airmatic/Beckett-Harcum, 185 Park Dr., Wilmington, Ohio 45177. (513) 382-1691 Air Products & Chemicals, Inc., P. O. Box 538, Allentown, Pa. 18105. (215) 395-4911 Ajax International Corp., P. O. Box 4007, Santa Barbara, Calif. 93103. (805) 966-1796 Ajusto Equipment Co., 20163 Haskins Rd., Bowling Green, Ohio 43402. (419) 244-4983 Alcatel Vacuum Products, 7 Pond St., Hanover, Mass. 02339. (617) 826-4511 Alcolac, Inc., 3440 Fairfield Rd., Baltimore, Md. 21226. (301) 355-2600 Alconox, Inc., 215 Park Ave., So., New York, Ν. Υ. 10003. (212) 473-1300 Alden Electronic & Impulse Recording Equipment Co., Inc., Washington St., Westboro, Mass. 0 1 5 8 1 . (617) 366-8851 Aldrich Chemical Co., Inc., 940 W. St. Paul Ave., Milwaukee, Wis. 53233. (414)273-3850 Alessi Industries, 3195 C Airport Loop Dr., Costa Mesa, Calif. 92626. (714) 979-8912 Allen-Bradley Co., 1201 S. Second St., Milwaukee, Wis. 53204. (414) 671-2000 Allied Chemical Corp., Specialty Chemicals Div., P. O. Box 1087R, Morristown, N . J . 07960. (201) 455-3162 Alltech Associates, Inc., 202 Campus Dr., Arlington Heights, III. 60004. (312) 392-2670 Almac Cryogenics, Inc., 1108 26th St., Oakland, Calif. 94607. (415) 832-1505 Alnor Instrument Co., 7301 N. Caldwell Ave., Niles, III. 60648. (312) 647-7866 Alpha Data, Inc., 20750 Manila St., Chatsworth, Calif. 9 1 3 1 1 . (213) 882-6500 Alphamedics Mfg. Corp., 6401 McPherson Ave., Levittown, Pa. 19057. (215) 945-4500 Alpha Scientific, Inc., 28971 Hopkins St., Suite 1 , Hayward, Calif. 94545.

(415) 782-4747

Alsop Engineering Corp., Main & Norton Sts., Milldale, Conn. 06467. (203) 628-9661 Altex Scientific, Inc., 1450 Sixth St., Berkeley, Calif. 94710. (415) 525-5500 Aluminum Company of America, 1501 Alcoa Bldg., Pittsburgh, Pa. 15219. (412) 553-4545 American Air Filter Co., Inc., P. O. Box 1100, Louisville, Ky. 4 0 2 0 1 . (502) 637-0011 American Bridge, Div. of U.S. Steel Corp., 600 Grant St., Pittsburgh, Pa. 15230. (412) 433-1121 American Cleaning Equipment Corp., 111 S. Route 53, Addison, III. 60101. (312) 627-6900 American Gas & Chemical Co., Ltd., 511 E. 72nd St., New York, Ν. Υ. 10021. (212) 535-7336 American Instrument Co., Div. of Travenol Labs., Inc., 8030 Georgia Ave., Silver Spring, Md. 20910. (301)589-1727 American Lewa, Inc., 11 Mercer Rd., Natick, Mass. 01760. (617)653-0229 American Magnetics, Inc., P. O. Box R, Oak Ridge, Tenn. 37830. (615) 482-1056 American Meter Div., The Singer Co., 13500 Philmont Ave., Philadelphia, Pa. 19116. (215) O R 3 - 2 1 0 0 American Optical Corp. (Mass.), 14 Mechanic St., Southbridge, Mass. 01550. (617)765-9711 American Optical Corp., Scientific Instrument Div., Eggert & Sugar Rds., Buffalo, N . Y . 14215. (716)895-4000 American Smelting & Refining Co., (ASARCO), Central Research Labs., S. Plainfield, N . J . 07080. (201) 756-4800 American Thermo Ware Co., 16 Warren St., New York, N . Y . 10007. (212) 267-1126 American Ultraviolet Co., 134 C o m m e r c e St., Chatham, N . J . 07928. (201) 635-8355 Amersham/Searle Corp., 2636 S. Clearbrook Dr., Arlington Heights, III. 60005. (800) 323-9750 Amersil, Inc., 685 Ramsey Ave., Hillside, N . J . 07205. (201)688-4500 The Ames Laboratories, Inc., 200 Rock La., Milford, Conn. 06460. (203) 874-2463 A m e t e k / U . S . Gauge, 900 Clymer Ave.,

Sellersville, Pa. 18960. (215) 257-6531 AMF Cuno Div., AMF Corp., 400 Research Pkwy., Meriden, Conn. 06450. (203) 237-5541 Amicon Corp., Scientific Systems Div., 21 Hartwell Ave., Lexington, Mass. 02173. (617)861-9600 Amperex Electronic Corp., 230 Duffy Ave., Hicksville, Ν. Υ. 11802. (516) 931-6200 Amprobe Instrument, Div. of SOS Consolidated Inc., 630 Merrick Rd., Lynbrook, Ν. Υ. 11563.

(516) 593-5600 LABORATORY GUIDE

AUGUST 1975 275 LG

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Amsco Industrial Co., Div. of American Sterilizer Co., 2820 W. 23rd St., Erie, Pa. 16512. (814)838-6511 Amstro Corp., 326-97 Washington St., Hackettstown, N. J. 07840. (201) 852-2621 Anachemia Chemicals, Inc., P. O. Box 87, Champlain, Ν. Υ. 12919. (518) 298-9441 Anacon, Inc., 30 Main St., Ashland, Mass. 01721. (617)881-3003 Anadex Instruments, Inc., 7833 Haskell Ave., Van Nuys, Calif. 91406. (213) 782-9527 Analabs, Inc., Sub. of New England Nuclear, 80 Republic Dr., North Haven. Conn. 06473. (203) 288-8463 Analog Devices, Inc., P. O. Box 280, Rt. 1 Industrial Park, Norwood, Mass. 02062. (617)329-4700 Analog Technology Corp., 3410 E. Foothill Blvd., Pasadena, Calif. 91107. (213) 449-8440 Analtech, Inc., 75 Blue Hen Dr., Newark, Del. 19711. (302) 737-6960 Analytical Bio Chemistry Labs., Inc., P. O. Box 1097, Columbia, Mo. 65201. (314) 474-6050 Analytical Development Corp., 1875 Willow Park Way, Monument, Colo. 80132. (303)481-2283 Analytical Instrument Development, Inc., 250 S. Franklin St., West Chester, Pa. 19380. (215) 692-4575 Analytical Measurements, Inc., 31 Willow St., Chatham, N . J . 07928. (201) 273-7500 Analytical Research Labs., Inc., 160 TaylorSt., Monrovia, Calif. 91016. (213) 357-3247 Anarak, Inc., 2423 Old Middlefield Way, Mt. View, Calif. 94040. Anderson Development Co., 1415 E. Michigan St., Adrian, Mich. 49221. (313) 263-2121 Anderson Laboratories, Inc., 1901 W. Vickery, P. O. Box 1957, Fort Worth, Tex. 76101. (817)332-8144 Andonian Cryogenics, Inc., 26 Farwell St., Newtonville, Mass. 02160. (617) 969-8010 Andros, Inc., 2332 4th St., Berkeley, Calif. 94710. (415)849-1377 Angstrom, Inc., P. O. Box 248, Belleville, Mich. 48111. (313)697-8058 R. B. AnnisCo., 1101 N. Delaware St., Indianapolis, Ind. 46202. (317) 637-9282 Ann Arbor Terminals, Inc., 61 07 Jackson Rd., Ann Arbor, Mich. 48103. (313) 769-0926 Antech, Inc., 252 Calvary St., Waltham, Mass. 02154. (617)891-5800 Antek Instruments, Inc., 6005 N. Freeway, Houston, Tex. 77022. (713) 691-2265 Anver Bioscience Design, Inc., 160 E. Montecito Ave., Sierra Madre, Calif. 91024. (213) 355-1568 A. P. Circuit Corp., 865 W. End Ave., New York, Ν. Υ. 10025.

(212) 222-0876 Apex Scientific Co., 59 Donna Maria Way, Orinda, Calif. 94563. (415) 376-5041 Apollo Associates, P. O. Box 4 6 1 , Ardsley, Ν. Υ. 10502. Apollo Lasers, Inc., 6357 Arizona Circle, Los Angeles, Calif. 90045.

(213) 776-3343 Applied Automation, Inc., Pawhuska Rd., Bartlesville, Okla. 74004. (918) 661-6141 Applied Coatings, Inc., 6 Industrial Rd., Pequannock, N. J. 07440. (201) 694-0500 Applied Electrochemistry, Inc., 735 N. Pastoria Ave., Sunnyvale, Calif. 94086. (408) 732-7880 Applied Instruments, Inc., 25 Will PI., Brooklyn, Ν. Υ. 11207. 276 LG AUGUST 1975

Applied Materials, Inc., 3050 Bowers Ave., Santa Clara, Calif. 9 5 0 5 1 . (408) 249-5555 Applied Photophysics Ltd., 20 Albemarle St., London, W 1 X 3 H A , England ( 01) 493-4194 Applied Plastics Co., Inc., 612 E. Franklin Ave., El Segundo, Calif. 90245. (213) 322-8050 Applied Research Labs., 9545 Wentworth St., P.O. Box 129, Sunland, Calif. 91040. (213)352-6011 Applied Science Labs., Inc., P. O. Box 440. State College, Pa. 16801. (814) 238-2406 Aquamatic, Inc., 2412 Grant Ave., Rockford, III. 61101. (815) 964-9421 Aquarium Systems Inc., 33208 Lakeland, Eastlake, Ohio 44094. (216) 946-9180 Aqua Test Corp., 791 Massachusetts Ave., Arlington, Mass. 02174. (617) 646-2626 Aquatronics, Inc., C & Ontario Sts., Philadelphia, Pa. 19134. (215) 739-0695 Arapahoe Chemicals, Inc., Sub. of Syntex Corp., 2855 Walnut St., Boulder, Colo. 80303. (303)442-1926 Arenberg Ultrasonic Lab., Inc., 94 Green St., Jamaica Plain, Mass. 02130. (617) 522-8640 A.R.F. Products, Inc., Gardner Rd., Raton, Ν. Μ. 87740. (505) 445-3665 Aromil Chemical Co., P. O. Box 7627, Baltimore, Md. 21207. (301) 655-3081 Arro Labs., Inc., P. O. Box 686, Joliet, III. 60434. (815) 727-5436 Arrow Engineering Co., Inc., 200 Central Ave., Hillside, N . J . 07205. (201) 923-8786 Artek Systems Corp., 275 Adams Blvd., Farmingdale, Ν. Υ. 11735. (516) 293-4420 Artisan Electronics Corp., 5 Eastmans Rd., Parsippany, N . J . 07054. (201) 887-7100 Artronix, | i n c , 1314 Hanley Industrial Ct., St. Louis, Mo. 63144. (314) 968-4740 Aseptic-Thermo Indicator Co., 11471 Vanowen St., N. Hollywood, Calif. 91609. (213)877-3117 Ash Stevens Inc., Detroit Research Park, 5861 John C. Lodge Freeway, Detroit, Mich. 48202. (313) 872-6400 Associated Electrical Industries International Ltd., 33 Grosvenor PI., London, S.W. 1, England BE-1234 Astro Industries, Inc., 606 N. Olive St., Santa Barbara, Calif. 93101. (805) 963-3461 Astrosystems, Inc., 6 Nevada Dr., Lake Success, Ν. Υ. 11040. (516) 328-1600 Atago Optical Work Co., Ltd., 16-11, Yushima 2-chome, Bunkyo-ku, Tokyo, Japan 113. ( 03) 812-6271 Athena Controls, Inc., 2 Union Hill Rd., W. Conshohocken, Pa. 19428. (215) 828-2490 Atkins Technical, Inc., 3310 S. W. 40 Blvd., Gainesville, Fla. 32608. (904) 372-3518 Atlantic Research Corp., 5390 Cherokee Ave., Alexandria, Va. 22314. (703) 354-3400 Atlantic Ultraviolet Corp., 24-10 40th Ave., Long Island City, Ν. Υ. 11101. Atlas Electric Devices Co., 4114 N. Ravenswood Ave., Chicago, III. 60613. (312) 327-4520 Atomergic Chemetals Co., Div. of Gallard-Schlesinger Chemical Mfg. Corp., 584 Mineola Ave., Carle Place, Ν . Υ . 11514. (516) 333-5600 Atomic Energy of Canada Ltd., Commercial Products, P. O. Box 6300, Postal Station J, Ottawa, Canada (613) 592-2790

Aurora Pump, 800 Airport Rd., North Aurora, III. 60542. (312)859-7000 Aurora Pump, Verti-Line Plant, 200 N. Puente Ave., City of Industry, Calif. 91746. (213)330-3411 Autoclave Engineers, Inc., 2930 W. 22nd St., Erie, Pa. 16512. (814) 838-2071 Automation Products, Inc., 3030 Max Roy St., Houston, Tex. 77008. (713) 869-0361 Automatic Steam Products Corp., 43-20 34th St., Long Island City, Ν. Υ. 11101. (212)937-4500 Automatic Switch Co., 50-56 Hanover Rd., Florham Park, N . J . 07932. (201) 966-2000 Automatic Timing & Controls Co., 201 S. Gulph Rd., King of Prussia, Pa. 19406. (215) 265-0200 Automation Industries, Inc., Sperry Div., Shelter Rock Rd., Danbury, Conn. 06810. (203)748-3581 Avco Everett Research Lab., Inc., 2385 Revere Beach Pkwy., Everett, Mass. 02149. (617)389-3000 Babcock & Wilcox Co., Automated Machine Div., 1 North Field Plaza, Troy, Mich. 48084. (313) 879-9290 Babcock & Wilcock Co., Power Generation Div., P. O. Box 3 5 1 , 20 S. Van Buren Ave., Barberton, Ohio 44203. (216)753-4511 Babcock & Wilcock Co., Refractories Div., P. O. Box 923, Old Savannah Rd., Augusta, Ga. 30903. (404) 798-8000 Babcock & Wilcox Co., Tubular Products Div., P. O. Box 4 0 1 , Beaver Falls, Pa. 15010. (412)846-0100 Babcock & Wilcox Canada, Ltd., Coronation Blvd., Gait, Ontario, Canada (519)621-2130 Bach-Simpson, Ltd. See listings for The London Co. Bacharach Instrument Co., Div. of AMBAC Industries, Inc., 625 Alpha Dr., Pittsburgh, Pa. 15238. (412) 782-3500 Badger Meter, Inc., 4545 W. Brown Deer Rd., Milwaukee, Wis. 53223. (414) 355-0400 Bailey Meter Co., Sub. Babcock & Wilcock Co., 29801 Euclid Ave., Wickliffe, Ohio 44092. (216) 943-5500 Bailey Meter Co., Belfab Unit, Sub. Babcock & Wilcox Co., Regional Airport, P.O. Box 1881, Daytona Beach, Fla. 32015. (904) 253-0628 Baird-Atomic, Inc., 125 Middlesex Tnpk., Bedford, Mass. 01730. (617) 276-6000 J. T. Baker Chemical Co., 222 Red School Lane, Phillipsburg, N. J. 08865. (201) 859-2151 Baker Perkins Inc., 1000 Hess St., Saginaw, Mich. 4 8 6 0 1 . (517) 752-4121 Bal Seal Engineering Co., 17592 Sherbrook Dr., Tustin, Calif. 92680. Balsbaugh Laboratories, Inc., 25 Industrial Park Rd., S. Hingham, Mass. 02043. (617)749-1860 Balston, Inc., Box C, 703 Massachusetts Ave., Lexington, Mass. 02173. (617) 862-7455 Balzers High Vacuum Corp., P. O. Box 10816, Santa Ana, Calif. 9 2 7 1 1 . (714) 547-7767 Β & Β Motor & Control Corp., 96 Spring St., New York, Ν. Υ. 10012. (212) 966-5777 Β & F Instruments, Inc., 654 Street Rd., Cornwells Hgts., Pa. 19020. (215) 639-7100 Barber-Colman Co., Industrial Instruments Div., 1319 Rock St., Rockford, III. 61101. (815)877-0241 Barium and Chemicals, Inc., P. O. Box 218, Cty. Rd. 44, Steubenville, Ohio 43952. (614)282-9776 LABORATORY GUIDE

Barnebey-Cheney, 835 Ν. Cassady Ave., Columbus, Ohio 43216. (614) 258-9501 Barnes Engineering Co., 30 C o m m e r c e Rd., S t a m f o r d , Conn. 06902. (203) 348-5381 Bamstead Co., A Div. of Sybron Corp., 225 Rivermoor St., Boston, Mass. 02132. (617)327-1600 Baroid Div., Ν L Industries, Inc., P. O. Box 1675, Houston, Tex. 7 7 0 0 1 . (713) 524-6381 Battelle Memorial Institute, 505 King Ave., Columbus, Ohio 4 3 2 0 1 . (614) 299-3151 Bausch & Lomb, Inc., Analytical Systems Div., 820 Linden Ave., Rochester, N. Y. 14625. (716)385-1000 Bausch & Lomb, SOPD Div., Bausch St., Rochester, Ν. Υ. 14602. (716) 338-6294 Bayley Instrument Co., P. O. Box 605, Danville, Calif. 94526. (415) 837-4649 B-D Spear Medical Systems, 123 Second Ave., W a l t h a m , Mass. 02154. (617) 890-4800 Beach-Russ Co., 544 Union Ave., Brooklyn, Ν. Υ. 11211. (212) 388-4090 Beckman Instruments, Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634.

(714) 871-4848 Bel-Art Products, Industrial Rd., Pequannock, N. J. 07440. (201) 694-0500 Belfort Instrument Co., 1600 S. Clinton St., Baltimore, Md. 21224. (301) 342-2626 F. W. Bell, Inc., 4949 Freeway Dr., E., Columbus, Ohio 43229. (614) 888-7501 Bell & Howell, Electronic & Instruments Group, 360 Sierra Madre Villa Ave., Pasadena, Calif. 91109. (213) 796-9381 Bellco Glass, Inc., 340 Edrudo Rd., Vineland, N. J . 08360. (609) 691-1075 Belleville Wire Cloth Co., Inc., 135 Little St., Belleville, N . J . 07109. (201) 759-2252 Bellofram Corp., 36 Blanchard Rd., Burlington, Mass. 01803. (617) 272-2100 Bemco, Inc., 9908 San Fernando Rd., Pacoima, Calif. 9 1 3 3 1 . (213) 899-5296 Bench Scale Equipment Co., P. O. Box 1123, 1939 E. First St., Dayton, Ohio 45401. (513)253-7111 The Bendix Corp., Process Instruments Div., P. O. Drawer 8 3 1 , Lewisburg, W. Va. 2 4 9 0 1 . (304)647-4358 The Bendix Corp., Box 4508, Davenport, Iowa. 52808. (319)324-9101 Berkeley Glasslab, 1399 64th St., Emeryville, Calif. 94608. (415) 658-3776 Berkeley Nucleonics Corp., 1198 Tenth St., Berkeley, Calif. 94710. (415) 527-1121 Berkeley Scientific Labs., Inc., 3210 Investment Blvd., Hayward, Calif. 94545. (415)783-3180 Bertan Associates, Inc., 180 Miller PI., Hicksville, Ν. Υ. 11801. (516) 433-3110 Charles Beseler Co., 8 Fernwood Rd., Florham Park, N. J. 07932. (201) 822-1000 Bethlehem Apparatus Co., Inc., Front & Depot Sts., Hellertown, Pa. 18055. (215) 838-7034 Betz Laboratories, Inc., Somerton Rd., Trevose, Pa. 19047. (215) 355-3300 BGI, Inc., 58 G u i n a n S t . , W a l t h a m , Mass. 02154. (617)891-9380 Bico, Inc., P. O. Box 6339, 3116 Valhalla Dr., Burbank, Calif. 91510. (21.3) 849-2179

LABORATORY GUIDE

James G. Biddle Co., Township Line & Jolly Rds., Plymouth Meeting, Pa. 19462. (215)646-9200 Β Ι F, A Unit of General Signal, 1600 Division Rd., W. W a r w i c k , R. I. 02893. (401) 885-1000 Β I F SaniTrol, A Unit of General Signal, 1800 12th St., S.E., P.O. Box 4, Largo, Fla. 33540. (813)584-2157 BioControl, 151 S. Ridge St., Port Sanilac, Mich. 48469. (313) 622-9980 Biolar Corp., 2 Hawthorne St., N. Grafton, Mass. 01536. (617) 839-5431 Biomation, 10411 Bubb Rd., Cupertino, Calif. 95014. (408) 255-9500 Biomed Instruments, Inc., 6 N. Michigan Ave., Suite 2000, Chicago, III. 60602. (312) 545-9060 Bio/Physics Systems, Inc., Baldwin Place Fid., Mahopac, Ν. Υ. 10541. (914) 628-7451 BioQuest, Div. of Becton, Dickinson & Co., P. O. Box 243, Cockeysville, Md. 21030. (301)666-0100 Bio-Rad Laboratories, 32nd and Griffin Aves., Richmond, Calif. 94804. (415) 234-4130 Bio-Science Industries, 1200 Memorial Dr., Asbury Park, N . J . 07712. (201) 988-3100 Bio-Sentry Telemetry, Inc., 20720 Earl St., Torrance, Calif. 90503. (213) 371-7352 B-J Enterprises, Inc., 1240 S. W. Alandale Ave., Albany, Ore. 9 7 3 2 1 . (503) 926-9968 Bjorksten Research Labs., Inc., P. O. Box 265, Madison, Wis. 5 3 7 0 1 . (608) 271-6900 Black Light Eastern, 29 New York Ave., Westbury, Ν. Υ. 11590. (516) 333-4840 Blackstone Ultrasonics, Inc., 1111 Allen St., J a m e s t o w n , Ν. Υ. 14701. (716) 665-2620 Blake Industries, Inc., 52 C o m m e r c e St., P.O. Box 464, S p r i n g f i e l d , N . J . 07081. (201)376-1357 Blaw-Knox Food & Chemical Equipment, Inc., Box 1 0 4 1 , Buffalo, Ν. Υ. 14240. (716) 895-2100 S. Blickman, Inc., 536 Gregory Ave., W e e h a w k e n , N. J. 07087. (201) 863-0800 Block Engineering, Inc., 19 Blackstone St., Cambridge, Mass. 02139. (617) 868-6050 Blue M Electric Co., 138th and Chatham St., Blue Island, III. 60406. (312) 385-9000 Blue White Industries, 14931 Chestnut St., Westminster, Calif. 92683. (714) 893-8529 Wm. Boekel & Co., Inc., 509-19 Vine St., Philadelphia, Pa. 19106. (215) M A 7 - 1 6 1 1 Borden Chemical, Resins and Chemicals Div., 50 W. Broad St., Columbus, Ohio 43215. (614) 461-4000 Bowen Engineering, Inc., P. O. Box 898, Somerville, N. J . 08876. (201) 725-3232 Bowser-Morner Testing Labs., Inc., 420 Davis Ave., P.O. Box 5 1 , Dayton, Ohio 4 5 4 0 1 . (513)253-8805 B/R Glass, Inc., P. O. Box 1040, Pasadena, Md. 21122. (301)437-0453 C. W. Brabender Instruments, Inc., 50 E. Wesley St., S. H a c k e n s a c k , N . J . 07606. (201) 343-8425 W. H. Brady Co., 2223 W. Camden Rd., Milwaukee, Wis. 5 3 2 0 1 . (414) 332-8100 Brailsford & Co., Inc., 670 Milton Rd., Rye, Ν. Υ. 10580. (914)967-1820 Brammer Standard Co., 214 Essex Knoll Dr., Coraopolis, Pa. 15108. (412) 262-1453 Brandt Associates, Inc., 50 Blue Hen Dr., Newark, Del. 19711. (302)731-1550

Branson Cleaning Equipment Co., Parrott Dr., Shelton, Conn. 06484. (203) 929-7301 B. Braun Instruments, P. O. Box 1088, San Mateo, Calif. 94403. (415) 345-6331 Richard D. Brew & Co., Inc., 90 Airport Rd., Concord, Ν. Η. 0 3 3 0 1 . (603) 225-6605 Brighton Corp., 11861 Mosteller Rd., Cincinnati, Ohio 4 5 2 4 1 . (513) 771-2300 Brinkmann Instruments, Inc., Cantiague Rd., Westbury, Ν. Υ. 11590. (516)334-7500 Briscoe Manufacturing Co., P. O. Box 628, 1055 Gibbard Ave., Columbus, Ohio 43216. (614)294-3376 Broadley-James Corp., 1714 S. Lyon St., Santa Ana, Calif. 92705. (714) 547-8061 Brockway Glass Co., Inc., McCullough Ave., Brockway, Pa. 15824. (814) 268-3015 Brookfield Engineering Labs., Inc., 240 CushingSt., Stoughton, Mass. 02072. (617) 344-4310 Brooklyn Thermometer Co., Inc., 90 Verdi St., Farmingdale, Ν. Υ. 11735. (516) 694-7610 Brooks Instrument Div., Emerson Electric Co., 407 W. Vine St., Hatfield, Pa. 19440. (215)368-2000 Broomall Industries, Inc., 682 Parkway, Broomall, Pa. 19008. (215)353-4610 Bruker Instruments, Inc., Manning Park, Billerica, Mass. 0 1 8 2 1 . (617) 667-5341 Bruker-Magnetics, Inc., One Vine Brook Park, Burlington, Mass. 01803. (617) 272-9250 Brunswick Corp., Technical Products Div., One Brunswick Plaza, Skokie, III. 60076. (312)982-6000 BTU Engineering Corp., Esquire Rd., N. Billerica, Mass. 01862. (617) 667-4111 Bubble-O-Meter, 7203 Lotus Ave., San Gabriel, Calif. 91775. (213) 286-4627 Buchler Instruments, Div. of Searle Analytic, Inc., 1327 16th St., Fort Lee, N. J . 07024. (201) 224-3333 Buehler Ltd., 2120 Greenwood St., Evanston, III. 60204. (312) 273-4095 Buhl Optical Co., 1009 Beech Ave., Pittsburgh, Pa. 15233. (412) 321-0076 Burdick & Jackson Labs., Inc., 1953 S. Harvey St., Muskegon, Mich. 49442. (616) 726-3171 Burling Instrument Co., 16 River Rd., Box 298, Chatham, N . J . 07928. (201) 635-9481 Burr Brown Research Corp., P. O. Box 11400, Tucson, Ariz. 85734. (602) 294-1431 Burrell Corp., 2223 Fifth Ave., Pittsburgh, Pa. 15219. (412)471-2527 Burton, Div. of Cavitron Corp., 7922 Haskell Ave., Van Nuys, Calif. 91406. (213) 989-4700 G. F. Bush Associates, Box 82, Slovington, Me. 0 4 6 8 1 . (207) 367-2484 Bussey Products Co., 2700 W. 35th St., Chicago, III. 60632. (312) 847-5035 The Butterworth Microanalytical Consultancy, Ltd., 4 1 , High St., Teddington, Middlesex, U. K. 01) 977-0750 BVS, Inc., 20 E. Main St., Honey Brook, Pa. 19344. (215) 273-2841 B/W Controls Inc., 2200 E. Maple Rd., Birmingham, Mich. 48012. (313) 643-8800 Cadillac Plastic & Chemical Co., 15841 Second Ave., P.O. Box 810, Detroit, Mich. 48232. (313)869-9500 Cahn Instruments, 16207 Carmenita Rd., Cerritos, Calif. 9 0 7 0 1 . (213) 926-3378 Cajon Co., 32550 Old South Miles Rd., Solon, Ohio 44139. (216) 248-0200 AUGUST 1975 277 LG

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Calbiochem, Clinical & Diagnostics Div., 10933 Ν. Torrey Pines Rd., L a J o l l a , Calif. 92037. (714)453-7331 Camag, Inc., 2855 S. 163rd S5m, New Berlin, Wis. 5 3 1 5 1 . (414) 786-9550 Cambridge Consultants Ltd., Bar Hill, Cambridge, CB3 8EZ, England ( 09) 548-0461 Cambridge Filter Corp., P. O. Box 1255, Syracuse, Ν. Υ. 13201. (315) 457-1000 Cambridge Physical Sciences, Bar Hill, Cambridge, CB3 8EZ, England Cambridge Thermionic Corp., 445 Concord Ave., Cambridge, Mass. 02138. (617)491-5400 Cameca Instruments, Inc., 101 Executive Blvd., Elmsford, Ν. Υ. 10523. (914) 592-4714 Canalco, Inc., 5635 Fisher La., Rockville, Md. 20852. (301)881-8090 Canberra Industries, Inc., 45 Gracey Ave., Meriden, Conn. 06450. (203) 238-2351 Canrad-Hanovia, Inc., 100 Chestnut St., Newark, N . J . 07105. (201)589-4300 Capintec, Inc., 63 E. Sandford Blvd., Mt. Vernon, Ν. Υ. 10550. (914) 664-6600 Carbolabs, Inc., Fairwood Rd., Bethany, Conn. 06525. (203) 393-3029 Carboline Co., 350 Hanley Industrial Ct., St. Louis, Mo. 63144. (314)644-1000 The Carborundum Co., Abrasives Marketing Div., P. O. Box 337, Niagara Falls, Ν. Υ. 14302. (716) 278-2000 The Carborundum Co., Commercial Filters Div., State Rd. 32 W., Lebanon, Ind. 46052. (317)482-3900 The Carborundum Co., Graphite Products Div. ( N . Y . ) , Sanborn, Hickman, & Armor Branch, P. O. Box 577, Niagara Falls, Ν. Υ. 14302. (716) 278-2000 The Carborundum Co., Graphite Products Div. (Ohio), Process Equipment Br., 31935 Aurora Rd., Solon, Ohio 44139. (216) 248-7100 The Carborundum Co., Pangborn Div., P. O. Box 380, Hagerstown, Md. 21740. (301) 739-3500 The Carborundum Co., Refractories & Electronics Div., P. O. Box 367, Niagara Falls, Ν. Υ. 14302. (716) 278-6221 R. P. Cargille Labs., Inc., 55 C o m m e r c e Rd., Cedar Grove, N. J. 07009. (201) 239-6633 Carle Instruments, Inc., 1141 E. Ash Ave., Fullerton, Calif. 9 2 6 3 1 . (714) 879-9900 Carlson Co., 3457 Weidner Ave., Oceanside, Ν. Υ. 11572. (516) 764-8181 Carnegie-Mellon University, API Standard Reference Materials, Schenley Park, Pittsburgh, Pa. 15213. (412) 621-2600 Carpenter Technology Corp., 101 W. Bern St., Reading, Pa. 19603. (215) 372-4511 Fred S. Carver Inc., W142 N9050 Fountain Blvd., Menomonee Falls, Wis. 53051. (414)255-2540 Cationics, Inc., 653 Alpha Dr., Cleveland, Ohio. 44143.

(216) 461-9861 C-E INVALCO, Div. of Combustion Engineering, Inc., P. O. Box 556, Tulsa, Okla. 74101. (918)582-4151 CEA Instruments, 555 Madison Ave., New York, Ν. Υ. 10022. (212) 980-3700 Celanese Piping Systems, 4300 Cemetery Rd., Hilliard, Ohio 43026. (614) 876-3200 Centorr Associates, Inc., P. O. Box 179, Suncook, Ν. Η. 03275. (603) 485-9504 Central Research Labs., Inc., Red Wing, Minn. 55066. (612) 388-3565

278 LG AUGUST 1975

Central Scientific Co., Div. of Cenco, Inc., 2600 S. Kostner Ave., Chicago, III. 60623. (312)277-8300 CGR Medical Corp., 2519 Wilkens Ave., Baltimore, Md. 21223. (301) 233-2300 H. B. Chapman, Jr. & Co., 1220 S. 49th St., Richmond, Calif. 94804. (415) 893-0216 Charleston Rubber Co., P. O. Drawer 4367, Charleston, S. C. 29405. (803) 744-7434 Chase-Logeman Corp., 59 Tec St., Hicksvilie, Ν. Υ. 11801. (516) 935-4710 Chatas Glass Co., 570 Broadlawn Ter., Vineland, N. J. 08360. (609) 691-5600 Chatham Controls Corp., 33 River Rd., Chatham, N. J. 07928.

(201) 635-8892 Chem Service, Inc., 851 Lincoln Ave., W e s t C h e s t e r , Pa. 19380. (215) 692-3026 Chemapec, Inc., 1 Newark St., Hoboken, N . J . 07030. (201)659-5417 Chemcon, Inc., 34 Mann St., S. Attleboro, Mass. 02703. (617) 761-6300 CHEMetrics, Inc., Mill Run Dr., Warrenton, Va. 22186. (703) 347-7660 Chemetron Corp., Industrial Gases, 111 E. Wacker Dr., Chicago, III. 6 0 6 0 1 . (312) 565-5000 Chemical & Solvent Distillers Co., Inc., 42-14 19th Ave., Astoria, Ν. Υ. 11105. (212)274-3339 Chemical Data Systems, Inc., Rd. 2, Box 74, Oxford, Pa. 19363. (215) 932-3636 Chemical Equipment Corp., 7454 E. 46th St., Tulsa, Okla. 74145. (918) 627-9094 Chemical Research Services, Inc., 852 Westgate Dr., Addison, III. 60101 (312) 543-5333 Chemplast, Inc., 36-150 Dey Rd., Wayne, N. J. 07470. (201) 696-4700 Chemplex Industries, Inc., 34 Bradley Rd., Scarsdale, Ν. Υ. 10583. (914) 472-6766 Chem-Pro Equipment Corp., 27 Daniel Rd., P.O. Box 195, Fairfield, N . J . 07006. (201)575-1924 Chemtrix, Inc., 135 N.W. Adams St., Hillsboro, Ore. 97123. (503) 648-0762 Chemtronics, Inc., 745 Distel Dr., Box 43, Los Altos, Calif. 94022. (415) 965-1977 Christie Electric Corp., 3410 W. 67th S5., P. O. Box 60020, Los Angeles, Calif. 90060. (213)750-1151 Chromalloy Electronics Div., 3901 N. 29th Ave., Hollywood, Fla. 33020. (305) 921-6262 Chromalytics Corp., Route 82, Unionville, Pa. 19375. (215) 347-2454 Chrometrics Labs., Inc., 523 Talcott Rd., Park Ridge, III. 60068. (312) 696-3036 Chrono-Log Corp., 2 West Park Rd., Havertown, Pa. 19083. (215) 853-1130 Cicero Scientific Glass, 308 W. Empire Ave., P.O. Box 6 7 1 , Benton Harbor, Mich. 49022. (616)926-2581 Cincinnati Sub-Zero Products, Inc., 2612 Gilbert Ave., Cincinnati, Ohio 45206. (513) 751-8810 Circle Seal Corp., P. O. Box 3666, Circle Seal Center, Anaheim, Calif. 92803. (714) 774-6110 City Chemical Corp., 132 W. 22nd St., New York, Ν. Υ. 10011. (212) 929-2723 C. P. C l a r e * Co., 3101 W. Pratt Ave., Chicago, III. 60647. (312) 262-7700 Clark-Cooper Corp., 464 N. Randolph Ave., Cinnaminson, N. J. 08077.

(609) 829-4580

Judith H. Clausen, Ph.D., Consulting Chemist, P. O. Box 203, Lexington, Mass. 02173. (617) 646-0220 Clay Adams, Div. of Becton, Dickinson & Co., 299 Webro Rd., Parsippany, N. J. 07054. (201)887-4800 The Cleveland Process Corp., 21651 Tungsten Rd., Cleveland, Ohio 44117. (216) 481-6913 Clifford Instruments, Inc., 189 Oak St.. Natick, Mass. 01760. (617)653-0038 Climatronics Corp., 1324 Motor Pkwy., Hauppauge, Ν. Υ. 11787. (516) 234-2772 Climet Instruments Co., P. O. Box 1 5 1 , 1320 W. Colton Ave., Redlands, Calif. 92373. (714) 793-2788 Clinton Laboratories, 1805 Colorado Ave., Santa M o n i c a , Calif. 90404. (213) 829-2894 CML-Macarr, Inc., 166 National Rd., Edison, N . J . 08817. (201)287-2810 Coast Engineering Laboratory, 13508 S. Normandie Ave., Gardena, Calif. 90249. (213)532-7400 Coates & Welter Instrument Corp, 777 N. Pastoria Ave., Sunnyvale, Calif. 94086. (408) 732-8200 Cobon Plastics Corp., 42 Lafayette St., Newark, N.J. 07102. (201)624-4200 Codevintec Pacific, Inc., 6263 Variel Ave., Woodland Hills, Calif. 91364. (213) 348-1719 Coherent Radiation, 3210 Porter Dr., Palo Alto, Calif. 94304. (415) 493-2111 Cole-Parmer Instrument Co., 7425 N. Oak Park Ave., Chicago, III. 60648. (312) 647-0272 Coleman Instruments, Div. of The Perkin-Elmer Corp., 2000 York Rd., Oakbrook, III. 6 0 5 2 1 . (312) 887-0770 Don L. Collins & Associates, 418 N. Glendale Ave., Glendale, Calif. 91206. (213) 245-2711 Colorado Serum Co., 4950 York St., Denver, Colo. 80216. (303)623-5373 Colorado Video, Inc., P. O. Box 928, Boulder, Colo. 80302. (303) 444-3972 Columbia Scientific Industries, 3625 Bluestein Blvd., Austin, Tex. 78762. (512) 926-7850 Combination Pump Valve Co., 851 N. Preston St., Philadelphia, Pa. 19104. (215) 386-6508 Commonwealth Scientific Corp., 500 Pendleton St., Alexandria, Va. 22314. (703) 548-0800 Computer Devices, Inc., 9 Ray St., Burlington, Mass. 01803. (617) 273-1550 Computer Inquiry Systems, Inc., 2460 Lemoine Ave., Ft. Lee, N. J . 07024. (201) 947-7749 Conax Corp., 2300 Walden Ave., Buffalo, Ν. Υ. 14225. (716) 684-4500 Condyne Instruments, 4851 Del Monte Rd., La Canada, Calif. 9 1 0 1 1 . (213) 790-4411 Conostan Div., Continental Oil Co., P. O. Drawer 1267, Ponca City, Okla. 74601. (405) 762-3456 Conrac Corp., Cramer Div., Old Saybrook, Conn. 06475. (203) 388-3574 Conrac Corp., Datex Div., 1600 S. Mountain Ave., Duarte, Calif. 91010. (213) 359-5381 Conrac Corp., Goodrich Div., 3560 Chicago Dr., Hudsonville, Mich. 49426. (616) 669-1000 Conrac Corp., Instrument/Controls Div., 1700 S. Mountain Ave., Duarte, Calif. 91010. (213)359-9141 Conrac Corp., New Jersey Div., 32 Fairfield PI., W. Caldwell, N. J. 07006. (201) 575-8000 Conrac Corp., Turner Div., 909 17th St., N.E., Cedar Rapids, Iowa 52402.

(319) 365-0421

LABORATORY GUIDE

Consolidated Controls Corp., 15 Durant Ave., Bethel, Conn. 0 6 8 0 1 . (203) 743-6721 Consolidated Ohmic Devices, Inc., 895 Waverly Ave., Holtsville, N. Y. 11742. (516) 654-3200 Consolidated Stills & Sterilizers, 76 Ashford St., Boston, Mass. 02134. (617) 782-6072 Contamination Control, Inc., Forty Foot & Tomlinson Rds., Kulpsville, Pa. 19443. (215) 368-2200 Continental Can Co., Inc., Beverage Sales & Marketing Div., 5745 E. River Fid., Chicago, III. 60631. (312)399-6100 Continental Can Co., Inc., General Packaging Div., 5745 E. River Rd., Chicago, III. 6 0 6 3 1 . (312)399-6100 Continental Can Co, Inc., Great Plains Bag Corp. Div., 2201 Bell Ave., Des Moines, Iowa 50321. (515) 283-2041 Continental Can Co., Inc., Plastic Container Div., 1 Landmark Square, Stamford, Conn. 06901. Continental Can Co., Inc., Tee-Pak, Inc. Div., 2 N. Riverside Plaza, Chicago, III. 60606. (312) 782-2020 Control Equipment Corp., 220 Tanner St., Lowell, Mass. 0 1 8 5 1 . (617)459-0573 Controlled Atmosphere, Inc., P. O. Box 2215, Orange, Calif. 92669. (714) 558-1113 Controlled Environment Equipment Corp., 14 Charles St., Needham Heights, Mass. 02194. (617)444-6772 Cooke Vacuum Products, Inc., 13 Merritt St., Norwalk, Conn. 06854. (203) 853-9500 Coors Porcelain Co., 600 Ninth St., Golden, Colo. 80402. (303) 279-6565 Coors Spectro-Chemical Lab., Div. Of Coors Porcelain Co., P. O. Box 500, Golden, Colo. 80401. (303) 279-6565 Corco Chemical Corp., Tyburn Rd. & Cedar Lane, Fairless Hills, Pa. 19030. (215) 295-5006 Core Laboratories, Inc., P. O. Box 47547, Dallas, Tex. 75247. (214)631-8270 Corion Corp., 73 Jeffrey Ave., Holliston, Mass. 01746. (617)429-5065 Corning Glass Works, Houghton Pk., Corning, Ν. Υ. 14830. (607)974-9000 Corning Scientific Instruments, Medfield Industrial Park. Medfield, Mass. 02052. (617)359-7711 Cosan Chemical Corp., 481 River Rd., Clifton, N.J. 07014. (201)472-4400 Coulter Electronics, Inc., 590 W. 20th St., Hialeah, Fla. 33010. (305)885-0131 Crane Co., Chempump Div., 175 Titus Ave., Warrington, Pa. 18976.

(215) 343-6000 Crawford Fitting Co., 29500 Solon Rd., Solon, Ohio 44139. (216)248-4600 Creco, Inc., 500 Smith St., Owosso, M i c h . 48867. (517)725-5355 Crescent Dental Mfg. Co., 7750 W. 47th St., Lyons, III. 60534. (312)447-8050 Crobaugh Labs., 3800 Perkins Ave., Cleveland, Ohio 44114

(216) 881-7320 Crosby Valve & Gage Co., 43 Kendrick St., W r e n t h a m , Mass. 02093. (617)384-3121 Crowell Mfg. Corp., 1539 W. Elizabeth Ave., Linden, N. J. 07036. (201)862-8620 CRYENCO, Div. of CTi, 4955 Bannock St., Denver, Colo. 80216. (303) 244-8691 Cryogenic Associates, 1718 M. L u e t t A v e . , Indianapolis, Ind. 46222. (317) 632-2515 Cryogenic Research Co., Inc., 1900 55th St., Boulder Industrial Park, Boulder, Colo. 8 0 3 0 1 . (303) 443-4992 Cryogenic Technology, Inc., Kelvin Pk.. 266 Second Ave., Waltham, Mass. 02154. (617)890-9400 Crystalab, Inc., 612 Capital Ave., Hartford, Conn. 06106. (203) 527-3215 LABORATORY GUIDE

Cudahy Labs., 5014 S. 33rd St., Omaha, Neb. 68107. (402)731-6400 Curtin Matheson Scientific Co., P. O. Box 1546, Houston, Tex. 77001.

(713) 923-1661 Curtiss Engineering & Research, P. O. Box 418, Union Lake, Mich. 48085. (313) 698-1010 Custom Glassblowing Service, 35 Henry Ave., Baltimore, M d . 21236. (301) 665-8275 Custom Scientific Instruments, Inc., P. O. Box A, 13 Wing Dr., Whippany, N. J. 07981. (201)538-8500 CVC Products, Inc., 1775 Mt. Read Blvd., Rochester, Ν. Υ. 14603. (716) 458-2550 Cyclo Sciences, Inc., 434 Bergen Blvd., Palisades Park, N . J . 07650. (201) 944-1616 The Cyclotron Corp., 950 Gilman St., Berkeley, Calif. 94710. (415) 524-8670 3-D Instruments, Inc., 883 S. East St., Anaheim, Calif. 92805.

(714) 956-9630 Dake Corp., 724 Robbins Rd., Grand Haven, Mich. 49417. (616)842-7110 D a m o n / l E C Div., 300 Second Ave., Needham, Mass. 02194. (617) 449-0800 D & W Industries, Inc., 1115 E. Arques Ave., Sunnyvale, Calif. 94086. (408) 245-9270 Dasibi Environmental Corp., 616 E. Colorado Blvd., Glendale, Calif. 91205. (213) 245-8530 DATAcap, Inc., 732 S. Federal St., Chicago, III. 60605. (312) 922-5366 Data Graphics Corp., 8402 Speedway Dr., San Antonio, Tex. 78230. (512) 342-9486 Datametrics, 340 Fordham Rd., Wilmington, Mass. 01887. (617) 658-5410 Datapulse, Div. of Systron-Donner Corp., 10150 W. Jefferson Blvd., Culver City, Calif. 90230. (213)836-6100 Adam David Co., 421-J Pike Rd., Huntingdon Valley, Pa. 19008. (215) 357-3365 Davidson Optronics, Inc., 2223 Ramona

Blvd., W. Covina, Calif. 91790. (213) 962-5181 Day Mixing, 4932 Beech St., Cincinnati, Ohio 45212. (513)351-1700 Dean Products, Inc., 985 Dean St., Brooklyn, Ν. Υ. 11238.

(212) 789-5400 DeBell & Richardson, Inc., Water St., Enfield, Conn. 06082. (203) 749-8371 Deccofelt Corp., 527 S. Vermont Ave., Glendora, Calif. 91740. (213) 963-8511 Del Electronics Corp., 250 E. Sandford Blvd., Mt. Vernon, Ν. Υ. 10550. (914) 699-2000 The De Laval Separator Co., 350 Dutchess Turnpike, Poughkeepsie, N. Y. 12602. (914) 452-1000 Delavan Electronics Inc., 14441 N. 73rd St., Scottsdale, Ariz. 85260. (602) 948-6350 Delaware Scientific Labs., Inc., 115 Percheron Dr., Bear, Del. 19701. (302) 834-7800 Dell Optics Co., Inc., 9226 Kennedy Blvd., N. Bergen, N. J. 07047. (201) 869-7300 Delta Design, Inc., 5725 Kearny Villa Rd., San Diego, Calif. 92123. (714) 292-5000 Delta Scientific Corp., 1172 Rt. 109, Lindenhurst, Ν. Υ. 11757. (516) 884-4422 Deltech Engineering, Inc., Century Park, N e w c a s t l e , Del. 19720. (302) 328-1345 Deltron, Inc., Wissahickon Ave, North Wales, Pa. 19454. (215) 699-9261

Demuth Glass, Div. Of Brockway Glass Co., Inc., Rt. 1, Box 13, Parkersburg, W. Va. 2 6 1 0 1 . (304)295-9311 The Denominator Co., Inc., Main St., Woodbury, Conn. 06798. (203) 263-3210 Denton Vacuum, Inc., Cherry Hill Industrial Center, Cherry Hill, N. J . 08003. (609)424-1012 Denver Equipment Div., Joy Manufacturing Co., 600 Broadway, Denver, Colo. 80217. (303) 831-7311 Derrick Manufacturing Co., 590 Duke Rd., Buffalo, Ν. Υ. 14225. (716)683-9010 Despatch Oven Co., P. O. Box 1320, Minneapolis, Minn. 55440. (612) 331-1873 Detoronics Corp., 10660 E. Rush St., S. El Monte, Calif. 91733. (213) 579-7130 Detrex Chemical Industries, Inc., Box 5 0 1 , Detroit, Mich. 48232. (313) 868-8600 Detroit Testing Laboratory, 8720 Northend Ave., Detroit, Mich. 48237. (313) 398-2100 DEVCO Engineering, Inc., 36 Pier Lane West, Fairfield, N . J . 07006. (201) 228-0321 Diamond Pencil Scribers Co., P. O. Box 913, Ansonia Station, New York, N. Y. 10023. (212)873-8903 Diamond Power Specialty Corp., Div. of Babcock & Wilcox Co., P. O. Box 415, Lancaster, Ohio 43130. (614) 653-6540 Diamond Shamrock, Nopco Div., 350 M. Kemble Ave., Morristown, N. J. 07960. (201) 267-1000 Diano Corp., 75 Forbes Blvd., P. O. Box 346, Mansfield, Mass. 02048. (617)339-3701 Diano Corp., Industrial X-Ray Div., 2 Lowell Ave., Winchester, Mass. 01890. (617) 729-5770 Harry W. Dietert Co., 9330 Roselawn Ave., Detroit, Mich. 48204. (313) 933-9790 Difco Laboratories, P. O. Box 1058 A, Detroit, Mich. 48232. (313) 961-0800 Digi-Data Corp., 8580 Dorsey Run Rd., Jessup, Md. 20794. (301 ) 498-0200 Digilab, Inc., 237 Putnam Ave., Cambridge, Mass. 02139. (617) 868-4330 Digimetric Co., Div. of Sybron Corp., 730 KalamathSt., Denver, Colo. 80204. (303) 534-1190 Digital Equipment Corp., 200 Forest St., Marlborough, Mass. 01752. (617)481-9511 W. C. Dillon & Co., Inc., 14620 Keswick St., Van Nuys, Calif. 91407. (213) 786-8812 Dimco-Gray Co., 207 E. Sixth St., Dayton, Ohio 45402. (513) 224-1913 Disc Instruments, Inc., 102 E. Baker St., Costa Mesa, Calif. 92626. (714) 979-5300 Distillation Engineering Co., 105 Dorsa Ave., Livingston, N. J. 07039. (201) 992-9600 Doerr Glass Co., Div. of Cenco, Inc., 409 N. E. Blvd., Vineland, N. J. 08360. (609) 692-5320 Dohrmann-Envirotech, 3240 Scott Blvd., Santa Clara, Calif. 95050. (408) 249-6000 Doric Scientific Corp., 3883 Ruffin Rd., San Diego, Calif. 92123 (714) 565-4415 Dorr-Oliver, Inc., 77 Havemeyer Lane, Stamford, Conn. 06904. (203) 348-5871 Dow Chemical U.S.A., Barstow Bldg., 2020 Dow Center, Midland, Mich. 48640. (517)636-5001

AUGUST 1975 279 LG

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Kepco, Inc., 131-38 Sanford Ave., Flushing, Ν. Υ. 11352. (212) 461-7000 Kernco Instruments, Inc., 708 N. Piedras St., El Paso, Tex. 79903. (915) 566-9651 Kessler-Ellis Products Co., 120 First Ave., Atlantic Highlands, N. J. 07716. (201) 291-0500 Kevex Corp., 898 Mahler Rd., Burlingame, Calif. 94010. (415)697-6901 Kewaunee Scientific Equipment Corp., 5088 S. Center St., Adrian, Mich. 49221. (517)263-5731 Key Associates, 34 S. Main St., Mt. Prospect, III. 60056. (312) 259-3570 Kilovolt Corp., 238 High St., Hackensack, N. J. 07602. (201)488-7373 Kimble Products, Div. of Owens-Illinois, Inc., P. O. Box 1035, Toledo, Ohio 43666. (419)242-6543 Kinemetrics, Inc., 336 Agostino Rd., San Gabriel, Calif. 91776. (213) 287-9731 Kinetic Dispersion Corp., 88 Beacon St., Buffalo, Ν. Υ. 14220. (716) 668-5800 Kinetic Systems, Inc., 75 Massasoit St., Waltham, Mass. 02154. (617) 893-7747 King Engineering Corp., P. O. Box 1228, 3201 S. State St., Ann Arbor, Mich. 48106. (313)662-5691

284 LG AUGUST 1975

King Nutronics Corp., S4z ι independence Ave., Woodland Hills, Calif. 91364. (213) 887-5460 King Refrigeration Mfg. Co., 241 129th Ave., Holland, Mich. 49423.

(616) 392-6178 King's Laboratory, Inc., Rt. 1, Box 107, Blythewood, S. C. 29016. (803) 754-5147 Kinney Vacuum Co., 3529 Washington St., Boston, Mass. 02130.

(617) 522-7100 Klett Manufacturing Co., Inc., 179 E. 87th St., New York, Ν. Υ. 10028. (212) 289-7805 Maurice A. Knight Co., P. O. Box 109, Akron, Ohio 44309. (216) 724-1277 Kobe, Inc., 3040 E. Slauson Ave., Huntington Park, Calif. 90255.

(213) 588-1271 Koehler Instrument Co., Inc., 1595 Sycamore Ave., Bohemia, Ν. Υ. 11716. (516)589-3800 Kollmorgen Corp., Electro-Optical Div., 347 King St., Northampton, Mass. ,01060. (413)586-2330 Kollsman Instrument Corp., 575 Underhill Rd., SYOSSET, Ν. Υ. 11791. (516) 921-4300 Komline-Sanderson Engineering Corp, 12 Holland Ave., Peapack, N. J. 07977. (201) 234-1000 Konigsberg Instruments, Inc., 2000 E. Foothill Blvd., Pasadena, Calif. 91107. (213) 449-0016 Kontes, Spruce St., Vineland, N. J. 08360. (609) 692-8500 Kontes/Martin, Inc., 1916 Greenleaf St., Evanston, III. 60204. (312) 475-0707 Kontron Inc., N. Harrison St. & Terhune Rd., Princeton, N. J. 08540. (609) 921-2080 Koslow Scientific Co., 7800 River Rd., N. Bergen, N. J. 07047. (201) 861-2266 Kraft Apparatus, Inc., 402 Sagamore

Ave.. Mineola, Ν. Υ. 11501. (516) 248-9363 Kratos, Instrument Div., 403 S. Raymond Ave., Pasadena, Calif. 91109. (213) 449-3090 Krishell Laboratories, Inc., 1735 S. E. Powell Blvd., Portland, Ore. 97202. (503) 232-1412 Kruger & Eckels, Inc., P. O. Box 6 8 1 , 1123 Mission St., S. Pasadena, Calif. 91030. (213)799-4200 L'A/Water Treatment, Div. of Chromalloy American Corp., 17400 E. Chestnut St., City of Industry, Calif. 91749. (213) 964-3433 The Lab Apparatus Co., 18901 Cranwood Pkwy., Cleveland, Ohio 44128. (216) 475-9000 Labconco Corp., 8811 Prospect Ave., Kansas City, Mo. 64132. (816) 363-6330 Lab Glass, Inc., 1172 Northwest Blvd., Vineland, N. J. 08360. (609) 691-3200 Labindustries, 1802 Second St.,

Berkeley, Calif. 94710. (415) 843-0220 Lab-Line Instruments, Inc, Lab-Line Plaza, 15th & Bloomingdale Aves., Melrose Park, III. 60160. (312) 345-7400 Laboratory Computing, Inc., 4915 Monona Dr., Madison, Wis. 53716. Laboratory Data Control, Div. of Milton Roy Co., P. O. Box 10235, Interstate Industrial Pk., Riviera Beach, Fla. 33404. (305) 844-5241 Laboratory Devices, P. O. Box 68, Cambridge, Mass. 02139. (617) 969-6673 Laboratory For Materials, Inc., P. O. Box 14, Burnt Hills, Ν. Υ. 12027. (518) 399-3815 Laboratory Supplies Co., Inc., 29 Jefry

La., Hicksville, Ν. Υ. 11801. (516) 681-7711

La Bour Pump Co., P. O. Box 1187, Elkhart, Ind. 46514. (219)293-0653 Labtest Equipment Co., 11828 La Grange Ave., Los Angeles, Calif. 90025. (213) 478-2518 Labtron Scientific Corp., 341 Conklin St., Farmingdale, Ν. Υ. 11735. (516) 293-4898 Lachat Chemicals, Inc., 1350 W. Mequon Rd., Mequon, Wis. 53092. (414) 241-3872 Lakeside Equipment Corp., 1022 E. Devon Ave., Bartlett, III. 60103. (312) 837-5640 Lambda Electronics Corp., 515 Broad Hollow Rd., Melville, L. Ι., Ν. Υ. 11746. (516)694-4200 Karl Lambrecht Corp., 4204 N. Lincoln Ave., Chicago, III. 60618. (312) 472-5442 LaMont Laboratories, P. O. Box 79, Tyngsboro, Mass. 01879. (603) 424-2929 LaMotte Chemical Products Co., Chestertown, Md. 21620. (301) 778-3100 Land Instruments, Inc., Fox Dr. & Main St., Tullytown, Pa. 19007. (215) 943-7882 L & L Special Furnace Co., 242 Conchester Rd., Twin Oaks, Pa. 19016. (215) HU5-7188 LaPine Scientific Co., 6001 S. Knox Ave., Chicago, III. 60629. (312) RE5-4700 Laser Optics, Inc., P. O. Box 3, Danbury, Conn. 06810. (203)744-4160 Laser Technology, Inc., 10624 Ventura Blvd., N. Hollywood, Calif. 91604. (213) 763-7091 Lawler Mfg., Inc., 262 Lackland Dr., Middlesex, N. J. 08846. (201) 469-8169 Lear Siegler, Inc., Environmental Tech. Div., 74 Inverness Dr., E., Englewood, Colo. 80110. (303) 770-3300 Leco Corp., 3000 Lakeview Ave., S5. Joseph, Mich. 49085. (616)983-5531 Ledoux & Co., 359 Alfred Ave., Teaneck, N . J . 07666. (201)837-7160 Leeds & Northrup Co., Sumneytown Pike, North Wales, Pa. 19454. (215) 643-2000 E. Leitz, Inc., Link Dr., Rockleigh, N. J. 07647. (201) 767-1100 Lektra Labs., Inc., 129-07 18th Ave., College Point, Ν. Υ. 11356. (212) 939-7171 LeMont Scientific, Inc., 1359 E. College Ave., State College, Pa. 16801. (814) 238-8403 Lenox Instrument Co., 111 E. Luray St., Philadelphia, Pa. 19120. (215) 324-4543 Lepel High Frequency Labs., Inc., 59-21 Queens-Midtown Expressway, Maspeth, Ν. Υ. 11378. (212) 426-4580 Lermer Packaging Corp., 520 South Ave., Garwood, N . J . 07027. (201) 789-0900 Leslie Co., 399 Jefferson Rd., Parsippany, N. J. 07054. (201) 887-9000 Leupold & Stevens, Inc., P. O. Box 688, Beaverton, Ore. 97005. (503) 646-9171 Leybold-Heraeus, Inc., 200 Seco Rd., Monroeville, Pa. 15146. (412) 372-8800 LFE Corp., Process Control Div., 1601 TrapeloRd., Waltham, Mass. 02154. (617) 890-2000 LFE Environmental Analysis Laboratories, 2030 Wright Ave., Richmond, Calif. 94804. (415)525-8510 Liberty Industries, Inc., 598 Deming Rd.. Berlin, Conn. 06037. (203) 828-6361 Lightner Instrument Co., 431 W. Market St., W. Chester, Pa. 19380.

(215) 436-9050 LABORATORY GUIDE

Lightpath Cells, Inc., 2050 Woodson Rd., St. Louis, Mo. 63114. (314)423-4834 Lindberg, 2450 W. Hubbard St., Chicago, III. 60612 (312) 666-3443 Linear Instruments Corp., 17282 Eastman Ave., Irvine, Calif. 92705. (714) 546-6776 Liquid Carbonic Corp., 135 S. LaSalle St., Chicago, III. 60603. (312)346-8181 Liquidyne Corp., 2121 Rt. 35, Sea Girt, N . J . 08750. (201)449-3200 Arthur D. Little, Inc., 15 Acorn Pk., Cambridge, Mass. 02140. (617) 864-5770 Litton Engineering Labs., P. O. Box 950, Grass Valley, Calif. 95945. (916) 273-6176 LKB Instruments, Inc., 12221 Parklawn Dr., Rockville, Md. 20852. (301) 881-2510 LND, Inc., 3230 Lawson Blvd., Oceanside, N.Y. 11572. (516) 678-6141 Lockwood and McLorie Inc., P. O. Box 113, Horsham, Pa. 19044. (215) 0S5-8718 The London Co., 811 Sharon Dr., Westlake, Ohio 44145.

(216) 871-8900 Lucifer Furnaces, Inc., 2048 Bunnell Rd., Warrington, Pa. 18976. (215) 343-0411 Ludlum Measurements, Inc., 501 Oak St., Sweetwater, Tex. 79556. (915) 235-5494 Luft Instruments, Inc., Old Winter St., Lincoln, Mass. 01773. (617) 259-9215 Lumenite Electronic Corp., 2331 N. 17th Ave., Franklin Park, III. 6 0 1 3 1 . (312) 455-1450 Lumonics Research Ltd., 105 Schneider Rd., Kanata, Ontario, Canada (613) 592-1460 Lusteroid Container Co., Inc., 82 Coit St., Irvington, N . J . 0 7 1 1 1 . (201) 374-4665 LuxelCorp., P. O. Box 61 75, Santa Barbara, Calif. 93111'. (805) 967-8216 3M Co., New Business Ventures Div'., 3M Center, Bldg. 209-BS, St. Paul, Minn. 5 5 1 0 1 . (612) 733-5596 3M Co., Nuclear Products Depl., 3M Center, St. Paul, Minn. 55101. (612) 733-7392 The Machlett Laboratories, Inc., A Subsidiary Of Raytheon Co., 1063 Hope St., Stamford, Conn. 06907. (203) 348-7511 Majac Div., Donaldson Co., Inc., 5555 S. G a m e t t R d . , Tulsa, Okla. 74145. (918) 664-0680 Mallinckrodt Chemical Works, Science Products Div., 2nd & Mallinckrodt Sts., St. Louis, Mo. 63147. (314)731-4141 Mallinckrodt/Nuclear, P. O. Box 5439, St. Louis, Mo. 63160. (314)731-4141 Mallinckrodt, Inc., Plastics Div., U.S. Hwy. No. 1 N., P. O. Box 17884, Raleigh, N.C. 27609. (919)876-1255 M&T Chemicals Inc., Sub. of American Can Co., Rahway, N. J . 07065. (201)499-0200 Manostat Corp., 20 N. Moore St., New York, Ν. Υ. 10013. (212)966-1190 Manufacturers Engineering & Equipment Corp., 250 Titus Ave., Warrington, Pa. 18976. (215)343-6600 Marconi Instruments, Div. of Marconi Electronics Inc., 100 Stonehurst Ct., Northvale, N. J. 07647. (201) 767-7250 Marietta Apparatus Co., 118 Maple St., Marietta, Ohio 45750. (614) 373-5763 Markel Rubber Products Co., Inc., 3256 Bruner Ave., Bronx, Ν. Υ. 10469. (212) 379-3700 Markson Science, Inc., P. O. Box 767, Del Mar, Calif. 92014. (714) 755-6655 LABORATORY GUIDE

Mark-Tex Corp., 161 Coolidge Ave., Englewood, N. J. 0 7 6 3 1 . (201) 567-4111 Marlin Mfg. Corp., 12404 Triskett Rd., Cleveland, Ohio 4 4 1 1 1 . (216) 941-6200 Marshalltown Manufacturing, Inc., 71 OS. 12th Ave., Marshalltown, Iowa 50158. (515) 752-4251 Martin-Decker Co., 1928 S. Grand Ave., Santa Ana, Calif. 92705. (714) 540-9220 Marvac Scientific Mfg. Co., 1045 Shary Circle, Concord, Calif. 94520. (415) 825-4636 Maryland Plastics, Inc., 461 8th Ave., New York, Ν. Υ. 10001.

(212) 686-5681 Mast Development Co., 2212 E. 12th St., Davenport, Iowa 52803. (319) 326-0141 Master Appliance Corp., 2420 18th St., Racine, Wis. 53403. (414)633-7791 Matheson Gas Products, P. O. Box 85, 932 Paterson Plank Rd., E. Rutherford, N . J . 07073. (201)933-2400 Matthey Bishop, Inc., 4 Malin Rd., Malvern, Pa. 19355. (215)644-3100 Maurukas Co., Inc., 6823 Lake Ave., Elyria, Ohio 44035. (216) 323-2000 Maxon Corp., 201 E. 18th St., Muncie, Ind. 47302. (317)284-3304 Mayer Refrigerating Engineers, Inc., 600 Winters Ave., Paramus, N. J. 07652. (201) 967-9670 M C / B Manufacturing Chemists, 2909 Highland Ave., Norwood, Ohio 45212. (513) 631-0445 Walter C. McCrone Associates, Inc., 2820 S. Michigan Ave., Chicago, III. 60616. (312) 842-7100 McKee-Pedersen Instruments, P. O. Box 322, Danville, Calif. 94526. (415) 937-3630 McLean Engineering Labs., 70 Washington Rd., Princeton Junction, N . J . 08550. (609)799-0100 McMillan Electronics Corp., 7327 Ashcroft, Houston, Tex. 77036. (713) 774-6051 McNab, Inc., 20 N. MacQuesten Pkwy., Mt. Vernon, Ν. Υ. 10550. (914) 699-1616 MCR Corp., 2820 S. Michigan Ave., Chicago, 111.60616. (312)842-7100 MDA Scientific, Inc., 808 Busse Hwy., Park Ridge, III. 60068. (312) 696-4250 Mechanical Technology, Inc., 968 Albany-Shaker Rd., Latham, Ν. Υ. 12110. (518)785-2330 Mech-Tronics Nuclear, 430A Kay Ave., Addison, III. 6 0 1 0 1 . (312)543-9304 Meddev-Corp., P. O. Box 1352, Los Altos, Calif. 94022. Medical Chemical Corp., 1713 20th St., Santa Monica, Calif. 90404. (213) 829-4304 Medical Laboratory Automation, Inc., 520 N u b e r A v e . , Mt. Vernon, Ν. Υ. 10550. (914) 664-0366 Med-Science Electronics, Inc., 1455 Page Industrial Blvd., St. Louis, Mo. 63132. (314) 427-1000 Megrue Microanalytical Systems, Box 523, New Canaan, Conn. 06840. (203) 966-8548 Mensor Corp., P. O. Box 55642, Houston. Tex. 77055. (713) 464-6228 Mercer Glass Works, Inc., 725 Broadway, New York, Ν. Υ. 10003. (212) 673-5620 Merck Sharp & Dohme Canada Ltd., P. O. Box 899, Pointe Claire-Dorval, Quebec, Canada h9r4p. (514) 697-2823 Merck & Co., Inc., 126 E. Lincoln Ave., Rahway, N . J . 07065. (201)381-5000

The Meriam Instrument Div., The Scott & FetzerCo., 10920 Madison Ave., Cleveland, Ohio 44102. (216) 281-1100 Merix Chemical Co., 2234 E. 75th St., Chicago, III. 60649. (312) 221-8242 Metalwash Machinery Corp., 901 North Ave., Elizabeth, N . J . 07207. (201) 352-6876 Metex Corp., 970 New Durham Rd., Edison, N . J . 08817. (201)287-0800 Metramatic Corp., N. Frontage Rd., Landing, N. J. 07850. (201) 347-5200 Metrix Instrument Co., 5760 Rice Ave., Houston, Tex. 77036. (713) 668-2386 Metro Scientific Inc., 2121 Broad Hollow Rd., Willow Park Center, Farmingdale, Ν. Υ. 11735. (516) 293-9656 Metron Instruments, Inc., 1051 S. Platte River Dr., Denver, Colo. 80223. (303) 744-1791 Metron Optics, 809 Academy, P. O. Box 690, Solana Beach, Calif. 92075. (714) 755-4477 Mettler Instrument Corp., P. O. Box 100, Princeton, N. J . 08540. (609) 448-3000 Meylan Stopwatch Corp., 264 W. 40th St., New York, Ν. Υ. 10018. (212) 563-5344 MFECorp., Keewaydin Dr., Salem, Ν. Η. 03079. (603) 893-1921 MG Scientific Gases, Div. of MG Technical Products, Inc., 1100 Harrison Ave., Kearny, N . J . 07029. (201) 991-0100 Micro-Analysis, Inc., P. O. Box 5088, Wilmington, Del. 19808. (302) 994-6531 Microbiological Associates, 4733 Bethesda Ave., Bethesda, Md. 20014. (301) 654-3400 Microelectrodes, Inc., Grenier Industrial Village, Londonderry, Ν. Η. 03053. (603) 668-0692 Micromedic Systems, Inc., 102 Witmer Rd., Horsham, Pa. 19044. (215) 674-8500 Micromeritics Instrument Corp., 5680 Goshen Springs Rd., Norcross, Ga. 30071. (404)448-8282 Micro-Now Instrument Co., 6104 N. Pulaski Rd.. Chicago, III. 60646. (312) 478-1151 Microscal, Ltd., 20 Mattock La., London, W5 5 B H , England (01)567-5353 Middlesex General Industries, 6 Adele Rd., Woburn, Mass. 0 1 8 0 1 . (617) 935-8870 Midvale-Heppenstall Co., 4320 Wissahickon Ave., Philadelphia, Pa. 19140. (215)225-5000 Midwest Research Institute, 425 Volker Blvd., Kansas City, Mo. 64110. (816) L O 1 - 0 2 0 2 Midwestern Industries, Inc., 915 Oberlin R d . , S . W . , Massillon, Ohio 44646. (216) 833-8548 Midwestern Instruments, Inc., 6422 E. 41st St., Tulsa, Okla. 74135. (918) N A 7 - 1 1 1 1 MikroPul Corp., 10 Chatham Rd., Summit, N . J . 07901. (201)273-6360 Franklin Miller, Inc., 235 Watchung Ave., W. Orange, N . J . 07052. (201) 736-3900 Milletron, Inc., 540 Alpha Dr., Pittsburgh, Pa. 15238. (412)781-5300 Millipore Corp., Ashby Rd., Bedford, Mass. 01730. (800)225-1380 Milton Roy Co., 5000 Park St. N., P. O. Box 12169, St. Petersburg, Fia. 33733. (813) 544-2581 Minco Products, Inc., 7300 C o m m e r c e La., Minneapolis, Minn. 55432. (612) 786-3121 Mine Safety Appliances Co., 400 Penn Center Blvd., Pittsburgh, Pa. 15235.

(412) 241-5900

AUGUST 1975 285 LG

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ΜI SCO Scientific, 1825 Eastshore Hwy., Berkeley, Calif. 94710. (415) 843-1282 Mistogen Equipment Co., 2711 Adeline St., Oakland, Calif. 94607. (415)834-1550 Mixing Equipment Co., Inc., A Unit of General Signal, 135 Mt. Read Blvd., Rochester, Ν. Υ. 14603. (716) 436-5550 M / K Systems, Inc., 82 Sanderson Ave., Lynn, Mass. 01902. (617)599-0550 MKS Instruments, Inc., 25 Adams St., Burlington, Mass. 01803. (617) 272-9255 Modern Controls, Inc., 3040 Snelling A v e . S . , Minneapolis, Minn. 55406. (612) 721-4872 Modern Engineering Co., Inc., 3500 Bernard, St. Louis, Mo. 63103. (314) 533-3100 Moeller Instrument Co., Sub. of American Precision Industries, Inc., 3366 Union Rd., Buffalo, Ν. Υ. 14225. (716) 685-4000 Moisture Register Co., 1510 W. Chestnut St., Alhambra, Calif. 91802. (213) 283-3143 Molectron Corp., 177 N. Wolfe Rd., Sunnyvale, Calif. 94086. (408) 738-2661 Monitor Technology, Inc., 630 Price Ave., Redwood City, Calif. 94063. (415) 365-6550 Monroe, The Calculator Co., Div. of Litton Industries, 550 Central Ave., Orange, N . J . 07051. (201)673-6600 Monroe Electronics, Inc., 100 Housel Ave., Lyndonville, Ν. Υ. 14098. Monsanto Co., 800 N. Lindbergh Blvd., St. Louis, Mo. 63166. (314)694-1000 Monsanto Research Corp., Station B, Box 8, Dayton, Ohio 45407. (513) 268-6769 Morgan Industries, Inc., 3311 E. 59th St., Long Beach, Calif. 90805. (213) 634-4074 Morgan-Schaffer Corp., 5110 Courtrai Ave., Montreal 252, Quebec, Canada (514) 731-4652 MSA Research Corp., Evans City, Pa. 16033. (412)538-3510 Mine & Smelter industries, Inc., 3800 Race St., Denver, Colo". 80215. (303) 629-1100 Paul Mueller Co., P. O. Box 828, Springfield, Mo. 65801. (417) 865-2831 Multiform Desiccant Products, Inc., 1418 Niagara St., Buffalo, Ν. Υ. 14213. (716) 881-0100 Myron L Co., 1133 2nd St., Encinitas, Calif. 92024. (714) 753-6215 Nagle Pumps, Inc., 1249 Center Ave., Chicago Heights, III. 60411. (312) 754-2940 Nalge Co., P. O. Box 365, Rochester, N. Y.14602. (716)586-8800 Nalgene Industrial Div., Nalge Co., P. O. B o x 3 6 7 , Rochester, Ν. Υ. 14602. (716) 586-8800 Nametre Co., 272 Loring Ave., Edison, N . J . 08817. (201)885-1840 Nanogens, P. O. Box 1025, Watsonville, Calif. 95076. (408) 724-5422 The Nappe Corp., Route 22, Croton Falls, Ν. Υ. 10519. (914)277-3085 The Narda Microwave Corp., 75 Commercial St., Plainview, Ν. Υ. 11803. (516)433-9000 National Ceramic Products Co., 203 Mamaroneck Ave., White Plains, Ν. Υ. 10601. (914)428-6118 National Cryogenics Corp., Olivine St., Chicopee, Mass. 01040 National Environmental Instruments inc., P. O. Box 590, Pilgrim Station, Warwick, R. I. 02888. (401) 738-3710

286 LG AUGUST 1975

National Instrument Co., Inc., 4119 Fordleigh Rd., Baltimore, Md. 21215. (301) 764-0900 National Sonics, Div. Envirotech Corp., 120 Milbar Blvd., Farmingdale, Ν. Υ. 11735. (516)694-5110 National Spectrographic Laboratories, Inc., 19500 S. Miles Rd., Cleveland, Ohio44128. (216)475-8208 Neptune Chemical Pump Co., P. O. Box 247, Lansdale, Pa. 19446. (215) 699-9228 Neslab Instruments, Inc., 871 Islington St., Portsmouth, Ν. Η. 03801. (603) 436-9444 L. G. Nester Co., Buck and Sassafras Sts., Millville, N . J . 08332. (609) 825-0254 Newark Wire Cloth Co., 351 Verona Ave., Newark, N . J . 07104. (201)483-7700 New Brunswick Scientific Co., Inc., 1130 Somerset St., P. O. Box 606, New Brunswick, N . J . 08903. (201) 846-4600 New England Nuclear, 549 Albany St., Boston, Mass. 02118. (617)482-9595 The New York Blower Co., 3154 S. Shields Ave., Chicago, III. 60616. (312) 225-8100 New York Laboratory Supply Co., Inc., 510 Hempstead Turnpike, P. O. Box 516, W. Hempstead, Ν. Υ. 11552. (516) 538-7790 Newport of North America, Inc., 1400 Mill Creek Rd., Gladwyne, Pa. 19035. (215) 896-8656 Ney Metals, Inc., 269 Freeman St., Brooklyn, Ν. Υ. 11222. (212) 389-4900 Niagara Blower Co., 405 Lexington Ave., N e w Y o r k , Ν. Υ. 10017. (212) 0X7-6151 Nicolet Industries, Wissahickon Ave., Ambler, Pa. 19002. (215)646-4000 Nicolet Instrument Corp., 5225 Verona Rd., Madison, Wis. 53711. (608) 271-3333 Nicolet Technology Corp., 145 E. Dana St., Mt. View, Calif. 94041. (415)969-2076 Nikon, Inc., Div. of Ehrenreich Photo-Optical Industries, Inc., 623 Stewart Ave., Garden City, Ν. Υ. 11530. (516)248-5200 Ν L Industries, Inc., Baroid Div., P. O. Box 1675, Houston, Tex. 77001. (713) 524-6381 Ν L Industries, Inc., Dutch Boy Paints Div., P. O. Box 500, West Caldwell, N. J. 07006. (201)575-0970 Ν L Industries, Inc., Electronics Dept., P. O. Box 787, Muskegon, Mich. 49445. (616) 777-2602 Ν L Industries, Inc., Metal Div., 111 Broadway, New York, Ν. Υ. 10006. (212) 732-9400 Ν L Industries, Inc., Tarn Div., P. O. Box C, Bridge Station, Niagara Falls, Ν. Υ. 14305. (716) 285-3333 Non-Linear Systems, Inc., P. Ο Box Ν , Del Mar, Calif. 92014. (714) 755-1134 Norcon Instruments Inc., 132 Water St., S. Norwalk, Conn. 06854. (203) 846-2224 Norcross Corp., 255 Newtonville Ave., Newton, Mass. 02158. (617)969-7020 Norton Co. (Mass), 1 New Bond St., Worcester, Mass. 01606. (617) 853-1000 Norton Co., Metals Div., 45 Industrial PI., Newton, Mass. 02164. (617)969-7690 Norton Co., 12 East Ave., Tallmadge, Ohio 44278. (216)633-3224 Nuclear Associates, Inc., 35 Urban Ave., Westbury, Ν. Υ. 11590. (516)333-9344 Nuclear Data, Inc., Golf and Meacham Rds., Schaumburg, 111.60172. (312) 885-4700

Nuclear Enterprises, Inc., 935 Terminal Way, San Carlos, Calif. 94070. (415) 593-1455 Nuclear Equipment Chemical Corp., 165 Marine S5m, Farmingdale, Ν. Υ. 11735. (516)249-8454 Nuclear Equipment Corp., 931 Terminal Way, San Carlos, Calif. 94070. (415) 591-8203 Nuclear Materials & Equipment Corp., 609 N. Warren Ave., Apollo, Pa. 15613. (412)842-0111 Nuclear Measurements Corp., 2460 N. Arlington Ave., Indianapolis, Ind. 46218. (317) 546-2415 Nuclear Medical Systems, Inc., 515 Superior Ave., Newport Beach, Calif. 92660. (714)645-2111 Nuclear Products Co., 2519 N. Merced Ave., S. El Monte, Calif. 91733. (213) 283-2603 Nuclear Research Corp., Street Rd. & 2nd Street Pike, Southampton, Pa. 18966. (215) EL7-5015 Nuclear Semiconductor, 163 Constitution Dr., Menlo Park, Calif. 94025. (415) 325-4451 Nuclear Sources & Services, Inc., Box 14023, Houston, Tex. 77021. (713)641-0391 Nuclepore Corp., 7035 Commerce Circle, Pleasanton, Calif. 94566. (415) 462-2230 The Nucleus, Inc., P. O. Box R, Oak Ridge, Tenn. 37830. (615) 483-0008 Nuclide Corp., 642 E. College Ave., State College, Pa. 16801. (814)238-0541 Nuclide Corp., AGV Div., 916 Main St., Acton, Mass. 01720. (617) 263-2936 NUPRO Co., 15635 Saranac Rd., Cleveland, Ohio 44110. (216)851-5940 Nurnberg Thermometer Co., Inc., 127 Merrick Rd., Rockville Centre, Ν. Υ. 11570. (516)766-7619 Ohaus Scale Corp., 29 Hanover Rd., Florham Park, N . J , 07932. (201)377-9000 Ohio Semitronics, Inc., 1205 Chesapeake Ave., Columbus, Ohio 43212. (614) 486-9561 Ohio Valley Specialty Chemical Co., Rt. 6 Brant Dr., Marietta, Ohio 45750. (614)373-2276 The Ohmart Corp., 4241 Allendorf Dr., Cincinnati, Ohio 45209. (513) 272-0131 Olivetti Corp. of America, 500 Park Ave., N e w Y o r k , Ν. Υ. 10022. (212) 371-5500 Olympus Corporation of America, 2 Nevada Dr., New Hyde Park, Ν. Υ. 11040. (516)488-3880 Omnivector Instruments, 46 Cold Spring Rd., Freehold Township, N . J . 07728. (201) 431-1914 Optical Coating Laboratory, Inc., 2789 Giffen Ave., Santa Rosa, Calif. 95401. (707) 545-6440 Optical Industries, Inc., 3006 Enterprise, Costa Mesa, Calif. 92626. (714) 556-8200 Optoelectronics, Inc., 1309 Dynamic St., Petaluma, Calif. 94952. (707) 763-4181 Optovac, Inc., North Brookfield, Mass. 01535. (617)867-6444 Optronics International, Inc., 7 Stuart Rd., Chelmsford, Mass. 01824. (617) 256-4511 Oregon Metallurgical Corp., P. O. Box 580, Albany, Ore. 9 7 3 2 1 . (503) 926-4281 Orenda Div., Hawker Siddeley (Canada) Ltd., Box 6001, Toronto AMF. Ontario, Canada (416) 677-3250 Organomation Associates, Inc., P. O. Box 5, Turnpike Station, Shrewsbury, Mass.

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(617)755-3982

LABORATORY GUIDE

Orgmet, Inc., Route 1 1 1 , E. Hampstead, Ν. Η. 03826. (603) 329-6020 Oriel Corp. of America, 15 Market St., Stamford, Conn. 06902. (203) 357-1600 Oriel West. See listings for Oriel Corp. of America Orion Research Inc., 380 Putnam Ave., Cambridge, Mass. 02139. (617) 864-5400 Orbisphere Labs., Manoir de Bonvent, 1245 Collonge-Bellerive, Geneva, Switzerland Orbisphere Corp. See listings for Orbisphere Labs. ORTEC Incorporated, 100 Midland Rd., Oak Ridge, Tenn. 37830. (615) 482-4411 Osmonics, Inc., 15404 Industrial Rd., Hopkins, Minn. 55343. (612) 933-2277 Outokumpu Oy Technical Export Div., P. O. Box 27, Espoo 10, Finland 0 2 1 0 1 . 90-4211 Owens-Illinois, Inc. See listings for Kimble Products Owens-Corning Fiberglas Corp., Home Building Products Div., Fiberglas Tower, Toledo, Ohio. 43659. (419) 259-3000 Owens-Corning Fiberglas Corp., Equipment Manufacturers Marketing Div., Fiberglas Tower, Toledo, Ohio 43659. (419)259-3000 Owens-Corning Fiberglas Corp., Resins & Coating Div., Div., Fiberglas Tower, Toledo, Ohio 43659. (419) 259-3000 Oxford Laboratories, 1149 Chess Dr.,

Foster City, Calif. 94404. (415) 573-1343 Ozark-Mahoning Co., 1870 S. Boulder St., Tulsa, Okla. 74119. (918)585-2661 Ozone Research & Equipment Corp., 3840 N. 40th Ave., Phoenix, Ariz. 85019. (602) 272-2681 Pace Transducer Co., Div. of C. J. Enterprises, P. O. Box 834, Tarzana, Calif. 91356. (213)996-4131 Pacific Engineering & Production Co. of Nevada, 8201 Gibson Rd., P. O. Box 797, Henderson, Nev. 89015. (702) 565-8741 Pacific Measurements, Inc., 470 San Antonio Rd., Palo Alto, Calif. 94306. (415) 494-2900 Pacific Photometric Instruments, 5745 Peladeau St., Emeryville, Calif. 94608. (415) 654-6585 Pacific Transducer Corp., 2301 Federal Ave., Los Angeles, Calif. 90064. (213) 479-2119 Packard Instrument Co., Inc., 2200 Warrenville Rd., Downers Grove, III. 60515. (312)969-6000 Pak-Tronics, Inc., 4044 N. Rockwell St., Chicago, III. 60618. (312)463-6500 Pall Trincor Corp., 2395 Springfield Ave., Vaux Hall, N. J . 07088. (201) 245-8400 Pall Trinity Micro Corp., Sub. of Pall Corp., Route 2 8 1 , Cortland, Ν. Υ. 13045. (607) 756-7535 Parish Chemical Co., 815 W. Columbia La., Provo, Utah 84601. (801) 375-4943 Parker-Hannifin Corp., Accessories Div., 17325 Euclid Ave., Cleveland, Ohio 44112. (216)531-3000 Parker-Hannifin Corp., 17325 Euclid Ave., Cleveland, Ohio 44112. (216) 531-3000 Parker-Hannifin Corp., Manatrol Div., 17325 Euclid Ave., Cleveland, Ohio 44112. {216)531-3000 Parker-Hannifin Corp., Plastic Div., 17325 Euclid Ave., Cleveland, Ohio 44112. (216) 531-3000 Parker-Hannifin Corp., Pneumatic Div., 601 S. Wilmot St., Otsego, Mich.

49078.

(616)694-9411

LABORATORY GUIDE

Parker-Hannifin Corp., Tube Fitting Div., 17325 Euclid Ave., Cleveland, Ohio 44112. (216)531-3000 Parr Instrument Co., 211 53rd St., Moline, 111.61265. (309)762-7716 Particle Data, Inc., P. O. Box 265, Elmhurst, III. 60126. (312) 832-5653 Particle Data Laboratories, Ltd., 115 Hahn St., Elmhurst, III. 60126. (312) 832-5658 The Partlow Corp., New Hartford, Ν. Υ. 13413. (315) 797-2222 Patentrol Corp., 6660 Greenbriar Dr., Cleveland, Ohio 44130. (216) 842-0828 Patterson-Kelley Co., Div. of Taylor Wharton Co., Harsco Corp., 100 Burson St., E. Stroudsburg, Pa. 18301. (717) 421-7500 Payne Engineering Co., P. O. Box 70, Scott Depot, W. Va. 25560. (304) 755-4353 PCR, Inc., P. O. Box 1466, Gainesville, Fla. 32602. (904) 376-7522 Peel-A-Way Scientific, Div. of W. Glenn Wunderly Co., 1800 Floradale Ave., South El Monte, Calif. 91733. (213) 579-1913 Pen Kern Co., 211 Cleveland Dr., Croton-on-Hudson, Ν. Υ. 10520. (914) 271-5447 Penn-Chem Corp., 501 Richardson Dr., Lancaster, Pa. 17603. (717) 397-0308 Penniman & Browne, Inc., 6252 Falls Rd., Baltimore, M d . 21209. (301) V A 5 - 4 1 3 1 Pennsylvania Scale Co., 21 Graybill Rd., Leola, Pa. 17540. (717)656-2653 Pennwalt Corp., Indchem Div., Pennwalt Bldg., Three Parkway, Philadelphia. Pa. 19102. (215)587-7000 Pensar, Inc., 18 Lois St., Norwalk, Conn. 06851. (203) 847-4514 Percival Mfg. Co., Inc., P. O. Box 249-AC, Boone, Iowa 50036. (515) 432-6501 Pereny Equipment Co., Inc., Dept. Lg, Columbus, Ohio 43212. (614) 294-3577 Perkin-Elmer Corp., Main Ave., Norwalk, Conn. 06856. (203)762-1000 Perkin-Elmer, Ltd., Post Office Lane, Beaconsfield, Buckinghamshire HP91QA, England (049)46-6161 Perkin-Elmer Ultek, Inc., P. O. Box 10920, Palo Alto, Calif. 94303. (415) 967-2100 The Permutit Co., Inc., Sub. of Sybron Corp., E. 49 Midland Ave., Paramus, N . J . 07652. (201)262-8900 Petrarch Systems, P. O. Box 1 4 1 , Levittown, Pa. 19355. (215) 943-6463 Pfaltz & Bauer, Inc., 375 Fairfield Ave., Stamford, Conn. 06902. (203) 357-8700 Pfanstiehl Labs, Inc., 1219 Glen Rock Ave., W a u k e g a n , III. 60085. (312) 623-0370 Pfeiffer Glass, Inc., 140 Bennington Dr., Rochester, Ν. Υ. 14616. (716) 865-1290 Pfizer Diagnostics, 235 E. 42nd St., New York, Ν. Υ. 10017. (212)573-2384 Pharmacia Fine Chemicals, Inc., 800 Centennial Ave., Piscataway, N. J. 08854. (201)469-1222 Phase Separations Ltd., Deeside Industrial Estate, Queensferry, Flintshire, England (051)204-4818 Phelps Dodge Brass Co., State Rd., Rt. 522, Dayton, N . J . 08810. (201) 329-4511 Phelps Dodge International Corp., 437 Madison Ave., New York, Ν. Υ. 10022. (212) 751-3200 Phelps Dodge Sales Co., Inc., 300 Park Ave., New York, Ν. Υ. 10022.

(212) 751-3200

Philips Electronic Instruments, Inc., 750 S. Fulton Ave., Mount Vernon, Ν. Υ. 10550. (914)664-4500 Phillips Manufacturing Co., 7334 N. Clark St., Chicago, III. 60626. (312) 338-6200 Phillips Petroleum Co., Chemical Dept., Petrochemical & Supply Div., Drawer Ό ' , Borger, Tex. 79007. (806) 274-5236 Phipps & Bird, Inc., 303 S. 6th St., Richmond, Va. 23205. (703)644-5401 Photobell Co., Inc., 12 E. 22nd St., New York, Ν. Υ. 10010. (212)674-2121 Photomation, Inc., P. O. Box 460, 270 Polaris Ave., Mt. View, Calif. 94042. (415) 967-8992 PhotoMetrics, Inc., 442 Marrett Rd., Lexington, Mass. 02173. (617) 862-8050 Photovolt Corp., 1115 Broadway, New York, Ν. Υ. 10010. (212)989-2900 Photron Instrument Co., 6516 Detroit Ave., Cleveland, Ohio 44102. (216) 281-7020 Photronic, Inc., 411 Cheltena Ave., Jenkintown, Pa. 19046. (215) G L 5 - 9 9 9 1 Physical Electronics Industries, Inc., 6509 Flying Cloud Dr., Eden Prairie, Minn. 55343. (612)941-5540 Pierce Chemical Co., P. O. Box 117, Rockford, III. 61105. (815) 968-0747 Pioneer Metals, Inc., Sub. ol Ν L Industries, Inc., P. O. Box 23621, Los Angeles, Calif. 90023. (213) 263-7211 Pittsburgh Activated Carbon Div., Calgon Corp., Calgon Center, P. O. Box 1346, Pittsburgh, Pa. 15230. (412) 923-2345 P-L Biochemicals, Inc., 1037 W. McKinley Ave., Milwaukee, Wis. 53205. (414) 271-0667 Plasmatech Co., 9812 Klingerman St., S. El Monte, Calif. 91733. (213) 442-3450 Plastics Consulting Associates, P. O. Box 1327, Highland Park, N . J . 08904. (201) 572-1343 Plenum Scientific Research, Inc., 210 Lee PL, Hackensack, N . J . 0 7 6 0 1 . (201) 489-2771 Plessey Environmental Systems, 3939 RuffinRd., P. O. Box 80845, San Diego, Calif. 92123. (714)278-6500 Podbielniak, Inc., 203 Gateway Rd., Bensenville, III. 60106. (312) 766-1816 Polarizing Instrument Co., Inc., 616 Washington St., Peekskill, Ν. Υ. 10566. (914)737-2284 Polaroid Corp., 549 Technology Square, Cambridge, Mass. 02139. (617) 864-6000 Polycold Systems, Inc., 178 Paul Dr., Box 4 1 9 1 , San Rafael, Calif. 94903. (415) 479-0577 Polyfoam Packers Corp., 6415 N. California Ave., Chicago, III. 60645. (312) 761-4045 Polykote, Inc., 12400 Crossburn Ave., Cleveland, Ohio 44135. (216) 251-9200 PolyScience Corp., Sub. of Preston Industries, Inc., 6366 Gross Point Rd., Niles, III. 60648. (312)647-0611 Polysciences, Inc., Paul Valley Industrial Park, Warrington, Pa. 18976. (215) 343-6484 Pomfret Research Optics Inc., 817 Long Ridge Rd., Stamford, Conn. 06902. (203) 322-6386 Pope Scientific, Inc., P. O. Box 495, Menomonee Falls, Wis. 5 3 0 5 1 . (414) 251-9300 Fred Portz Jr. Associates, P. O. Box 42, Waukesha, Wis. 53186. (414) 542-4264 Precision Cells, Inc., 560 S. Broadway, Hicksville, Ν. Υ. 11801. (516) 938-7772 AUGUST 1975 287 LG

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Precision Digital, 1329 Highland Ave., P. 0 . Box 18, Needham, Mass. 02192. (617) 449-2265 Precision Distillation Apparatus Co., P. 0 . Box 578, Woodland Hills, Calif. 91364. (213) 883-9170 Precision Forming & Stamping Co., 1733 W. Fullerton Ave., Chicago, III. 60614. (312) 327-6868 Precision Gas Products, Inc., 681 Mill St., Rahway, N . J . 07065. (201)381-7600 Precision Sampling Corp., 8275 W. El Cajon, Baton Rouge, La. 70815. (504) 927-1128 Precision Standards Corp., 1701 Reynolds, Santa Ana, Calif. 92705. (714) 546-0431 Precision Systems, Inc., 60-LG Union Ave., Sudbury, Mass. 01776. (617) 443-8912 Presin Co., Inc., Trap Falls Rd., Shelton, Conn. 06484. (203) 929-5381 Pressure Chemical Co., 3419-25 SmallmanSt., Pittsburgh, Pa. 15201. (412) 682-5882 Pressure Products Industries, Div. of The Duriron Co., Inc., 412 S. Warminster Rd., Hatboro, Pa. 19040. (215) 675-1600 Princeton Applied Research Corp., P. O. Box 2565, Princeton, N. J. 08540. (609) 452-2111 Princeton Aqua Science, 789 Jersey Ave., New Brunswick, N. J . 08902. (201) 846-8800 Princeton BIOMEDIX Inc., 819 Alexander Rd., Princeton, N. J . 08540. (609) 452-8200 Princeton Gamma-Tech, Inc., P. O. Box 6 4 1 , Princeton, N . J . 08540. (609) 924-7310 Princeton Organics, Inc., P. O. Box 420, Princeton, N. J. 08540. (609) 921-6678 Princo Instruments, Inc., Southampton Industrial Park, Southampton, Pa. 18966. (215)355-1500 PRD Electronics, Inc., 1200 Prospect Ave., Westbury, Ν. Υ. 11590. (516) 334-7810 Process Analyzers, Inc. (Tex.), 5440 Alder, Houston, Tex. 77036. (713) 664-8151 Process Analyzers, Inc. (Calif.), 4151 Middlefield Rd., Palo Alto, Calif. 94303. (415)321-7801 Process & Instruments Corp., 1943 Broadway, Brooklyn, Ν. Υ. 11207. (212) 452-8380 Professional Tape Co., Inc., 144 Tower Dr., Burr Ridge, Hinsdale, III. 60521. (312) 986-1800 Programmed & Remote Systems Corp., 899 W. Highway 96, St. Paul, Minn. 55112. (612)484-7261 Progressive Exploration Products, 5020 Texas Ave., Reno-Stead, Nev. 89506. (702) 972-1772 Rrojectina, Ltd., P. O. Box 115, Heerbrugg CH-9435, Switzerland 07066. (071)72-2044 Prolabo, 12 Rue Pelee, 75 Paris X I , France 35. (355) 44 -88 Propper Mfg. Co., Inc., 36-04 SkiJIman Ave., Long Island, Ν. Υ. 11101. (212) EX2-6650 Pro-Tech, Inc., Roberts Lane, Malvern, Pa. 19355. (215) N I 4 - 4 4 2 0 Puffer-Hubbard Refrigerator, Div. of Challenge Stamping and Porcelain Co., 850 Jackson St., Grand Haven, Mich. 49417. (616)842-2080 Pulverizing Machinery. See listings for MikroPul Corp. Pure Carbon Co., Inc., 441 Hall Ave., St. Marys, Pa. 15857. (814)834-1573 Pye Unicam Ltd., York St., Cambridge, England CA6-1631

288 LG AUGUST 1975

Pyrocell Mfg. Co., Inc., P. O. Box 176, 91 Carver Ave., Westwood, N . J . 07675. (201)664-6660 The Pyrometer Instrument Co., Inc., 234 Industrial Pkwy., Northvale, N. J. 07647. (201) 768-2000 Pyro-Serv Instruments, Inc., 348 River Rd., N. Arlington, N . J . 07032. (201) 991-8000 QUALCO, P. O. Box 1319, Los Altos, Calif. 94022. (415) 964-7666 Quantachrome Corp., 337 Glen Cove Rd., Greenvale, Ν. Υ. 11548. (516) 671-0680 Quantalog, Inc., 42 Enterprise, P. O. Box 1523, Ann Arbor, Mich. 48106. (313) 769-4936 Quantum Industries, 341 Kaplan Dr., Fairfield, N. J . 07006. (201) 227-4880 Quaracell Products, inc., P. O. Box 147, Baldwin, Ν. Υ. 11510. (516)681-5032 Quartz General Corp., 12440 Exline St., El Monte, Calif. 91732. (213) 442-5222 Quartz Products Corp., 688 Somerset St., P. O. Box 628, Plainfield, N . J . 07061. (201) 757-4545 Quartz Scientific, Inc., 34602 Lakeland Blvd., Eastlake, Ohio 44094. (216) 942-5200 Quartz Timing Corp., 16 Crestline Rd., Norwalk, Conn. 06854. (203) 833-2792 Quickfit, 7 Just Rd., Fairfield, N . J . 07006. (201)227-4050 Jules Racine & Co., Inc., 85 Executive Blvd., Elmsford, Ν. Υ. 10523. (914) 592-4760 Radiation Dynamics, Inc., 1800 Shames Dr., Westbury, L. Ι., Ν. Υ. 11590. (516) 334-3990 Radiation Facilities, Inc., 63 Dell Glen Ave., Lodi, N . J . 07644. (201) 478-1200 Radiometer of Denmark. See listings for The London Co. Rainin Instrument Co., Inc., 94 Lincoln St., Brighton, Mass. 02135. (617) 787-5050 Ram Chemicals, 210 E. Alondra Blvd., Gardena, Calif. 90248. (213) FA1-0710 Random House, Inc., 201 E. 50th St., New York, Ν. Υ. 10022. (212) 751-2600 Rank Precision Industries Ltd., Analytical Div., Westwood Industrial Estate, Ramsgate Rd., Margate, Kent, England 2-4261 Rank Precision Industries, Inc., 411 E. Jarvis Ave., Des Plaines, III. 60018. (312) 297-7720 Ransco Industries, 2221 Statham Blvd., Oxnard, Calif. 93030. (805) 487-7777 Rao Instrument Co., 92 Emerson PI., Brooklyn, Ν. Υ. 11205. (212)857-8943 Rapids Machinery Co., 3561 3rd Ave., Marion, Iowa 52302. (319) 377-6371 Rascher & Betzold, Inc., 5410 N. Damen Ave., Chicago, III. 60625. (312) 275-7300 Raytek, Inc., A Div. of OCLI, 1277 Terra Bella Ave., Mountain View, Calif. 94043. (415)961-1650 Raytheon Co., Industrial Components Operation, 465 Centre St., Quincy, Mass. 02169. (617) 479-5300 Raytheon Co., Industrial Electronics Dept., 676 Island Pond Rd., Manchester, Ν. Η. 03103. (603) 668-1600 Raytheon Co., Microwave & Power Tube Div., 130 Second Ave., Waltham, Mass. 02154. (617)890-8080 Raytheon Semiconductor, 350 Ellis St., Mountain View, Calif. 94040.

(415) 968-9211

Raytheon Co., Sorensen Power Supplies, 676 Island Pond Rd., Manchester, N. H. 03103. (603)668-1600 Razel Scientific Instruments, Inc., 980 Hope St., Stamford, Conn. 06907. (203) 324-9914 RCA Aerospace Systems, Rts. 3 & 62, P. O. Box 588, Burlington, Mass. 01803. (617) 272-4000 RCA-Communications Systems Div., Front & Cooper Sts., Camden, N. J . 08102. (609) 963-8000 RCA Electromagnetic & Aviation Systems, 8500 Balboa Blvd., Van Nuys, Calif. 91409. (213)894-8111 RCA Electronic Components, 415 S. 5th St., Harrison, N.J. 07029. (201 ) 485-3900 RCA Electro Optics and Devices Div., New Holland Ave., Lancaster, Pa. 17604. (717)397-7661 RCA Missle & Surface Radar Div., Marne Hwy. & Borton Landing Rd., Moorestown, N. J. 08057. (609) 963-8000 RCA Solid State Div., Rt. 202, Somerville, N. J. 08876. (201) 722-3200 RCA Service Co., Cherry Hill, Camden, N . J . 08101. (609)963-8000 Reactor Experiments, Inc., 963 Terminal Way, San Carlos, Calif. 94070. (415) 592-3355 Realist, Inc., N93 W16288 Megal Dr., P. O. Box 67, Menomonee Falls, Wis. 53051. (414)251-8100 Charles M. Reeder Co., Inc., 196 Victor Ave., Detroit, Mich. 48203. (313) 868-8348 H. Reeve Angel & Co., Inc. See listings for Whatman, Inc. Regis Chemical Co., 8210 N. Austin, Morton Grove, III. 60053. (312) 967-6000 Relay Specialties, Inc., 13-00 Plaza Rd., Fair Lawn, N. J. 07410. (201) 797-3313 Reliable Chemical Co., 1161 Research Blvd., St. Louis, Mo. 63132. (314) 997-7200 Research, Inc., Box 24064, Minneapolis, Minn. 55424. (612)941-3300 Research Appliance Co., Rt. 8, Gibsonia, Pa. 15044. (412)443-5935 Research Assistants Corp., 10434 Baur Blvd., St. Louis, Mo. 63132. (314) 993-6170 Research Associates, Inc., 555 E. Linden Ave., Linden, N. J. 07036. (201) 862-1154 Research Chemicals, Div. of Nucor Corp., P. O. Box 14588, Phoenix, Ariz. 85063. (602) 936-1481 Research Devices, Inc., 616 Springfield Ave., Berkeley Hts., N. J. 07922. (201) 464-0668 Research Organic/Inorganic Chemical Corp., 11686 Sheldon St., Sun Valley, Calif. 91352. (213) 877-5631 Research Products Corp., 1015 E. Washington Ave., Madison, Wis. 53701. (608) 257-8801 Research Products International Corp., 2692 Delta La., Elk Grove Village, III. 60007. (312)766-7330 Resource Systems, Inc., 24 Commerce St., Newark, N.J. 07102. (201) 467-0074 Reuter-Stokes, Inc., 18530 S. Miles Pkwy., Cleveland, Ohio 44128. (216) 475-3434 REVCO, Inc., 1142 Memorial Dr., W. Columbia, S. C. 29169. (803) 796-1700 Rexnord Instrument Products, 446 Lancaster Ave., Malvern, Pa. 19355. (215) 647-2400 RFL Industries, Inc., Powerville Rd., Boonton, N . J . 07005. (201)334-3100 LABORATORY GUIDE

RHO Chemical Co., P. Ο. Box 55, Joliet, 111.60434. (815)727-4791 Rigaku USA, Lakeside Office Park, Door 16, Wakefield, mass. 01880. (617) 245-6014 Rinehart Labs., Inc., 5810 Lamar, P. O. Box 564, Arvada, Colo. 8 0 0 0 1 . (303) 422-4020 RKL Controls, Inc., Hainesport Ind. Park, Hainesport, N . J . 08036. (609) 267-2800 Roberts-Gordon Appliance Corp., P. O. Box 44, 44 Central Ave., Buffalo, N. Y. 14240. (716) 892-8400 Robertshaw Controls Co., 1701 Byrd Ave., Richmond, Va. 2 3 2 6 1 . (803) 282-9561 Robins Industries Corp., Data Products Div., 75 Austin Blvd., C o m m a c k , Ν. Υ. 11725. (516)543-5200 Robinson-Halpern Co., One Apollo Rd. , Plymouth Meeting, Pa. 19462. (215) 825-9200 Rochester Scientific Co., 15 Jet View Dr., Rochester, Ν. Υ. 14624. (716) 235-0110 Rockwell International, Municipal & Utility Div. and Flow Control Div., 400 N. Lexington Ave., Pittsburgh, Pa. 15208. (412) 241-8400 Rodder Instrument, 775 Sunshine Dr., Los Altos, Calif. 94022. (415) 968-4708 Rohde & Schwarz, 14 Gloria La., Fairfield, N. J . 07008. (201) 575-0750 Rohm and Haas Co., Independence Mall West, Philadelphia, Pa. 19105. (215) 592-3266 Rolar Corp., 103 Citation Ct., Birmingham, Ala. 35209. (205) 934-3376 Rosemount, Inc., P. O. Box 35129, Minneapolis, Minn. 55435. (612) 941-5560 Rosner-Hixson Laboratories, 3570 N. Avondale, Chicago, III. 60618. (312) 588-8500 Charles Ross & Son Co., 710-18 Old Willets Path, Hauppauge, Ν. Υ. 11787. (516) 234-0500 Royco Instruments, Inc., 141 Jefferson Dr., Menlo Park, Calif. 94025. (415) 325-7811 Royson Engineering Co., 101 N. Penn St., Hatboro, Pa. 19040. (215)675-2800 Rudolph Instruments, P. O. Box 1 6 1 , Little Falls, N . J . 07424. (201) 256-1491 Rudolph Research, 40 Pier La., Fairfield, N . J . 07006. (201)227-6810 Ruska Instrument Corp., P. O. Box 36010, 6121 Hillcroft Ave., Houston, Tex. 77036. (713) 774-2533 Rutherford Research Products Co., P. O. Box 162, Rutherford, N. J. 07070. (201)933-2091 Ryan Instruments, Inc., P. O. Box 24263, Seattle, Wash. 98124. (206) E A 2 - 8 6 0 0 Saber Labs., Inc., Box 232, Morton Grove, III. 60053. (312)966-9452 Sadtler Research Laboratories, Inc., 3316 Spring Garden St., Philadelphia, Pa. 19104. (215)382-7800 Sage Instruments, Div. of Orion Research, Inc., 11 Blackstone St., Cambridge, Mass. 02139. (617) 864-5400 St. Charles Manufacturing Co., 1611 E. Main St., St. Charles, III. 60174. (312) 584-3800 SAMES, 21 Rue Jean Mace, Grenoble, France 38 . ( 76) 44 -7764 Sanda, Inc., Gypsy & School House La., Philadelphia, Pa. 19144. (215) 849-8100 Sargent-Welch Scientific Co., 7300 N. L i n d e r A v e . , Skokie, III. 60076. (312) 677-0600

LABORATORY GUIDE

Sargent-Welch Scientific Co., Vacuum Products Div., 7300 N. Linder Ave., Skokie, III. 60076. (312) 677-0600 SAS Scientific Chemicals, Ltd., Victoria House, Vernon PL, London, WCIΒ 4DR, England 0 1 . (01)405-7954 August Sauter of America, Inc., 80 Fifth Ave., New York, Ν. Υ. 10011. (212) 685-6659 Savant Instruments, Inc., 221 Park Ave., Hicksville, Ν. Υ. 11801. (516) 935-8774 Sawyer Industries, Inc., 5649 Peck Rd., Arcadia, Calif. 91006. (213) 442-5981 Saxonburg Ceramics, Inc., P. O. Box 157, Saxonburg, Pa. 16056. (412) 352-1561 James F. Scanlon Co., 2428 Baseline Ave., Solvang, Calif. 93463. (805) 688-7498 Schaevitz Engineering, Rt. 130 & Union Ave., Pennsauken, N. J . 08110. (609) 662-8000 Schleicher & Schuell, Inc., 543 Washington St., Keene, Ν. Η. 03431. (603) 352-3810 Schneider Instrument Co., 8115 Camargo Rd., Madeira, Cincinnati, Ohio 45243. (513) 561-6803 Schoeffel Instrument Corp., 24 Booker St., Westwood, N . J . 07675. (201) 664-7263 Schroer Mfg. Co., 2217-29 Campbell, Kansas City, Mo. 64108. (816) 471-0488 Schutte and Koerting Co., State Rd., Comwells Heights, Bucks Co., Pa. 19020. (215) M E 9 - 0 9 0 0 Schwarz Mann, Mountain View Ave., Orangeburg, Ν. Υ. 10962. (914) 359-2700 Schwitzer Div., Wallace-Murray Corp., 2403 S. J St., Elwood, Ind. 46036. (317) 552-9839 Science Related Materials, Inc., P. O. Box 1422, Janesville, Wis. 53545. (608) 754-2118 Science Spectrum, Inc., 1216 State St., Santa Barbara, Calif. 9 3 1 0 1 . (805) 963-8605 Scientech, Inc., 5649 Arapahoe Ave., Boulder, Colo. 80303. (303) 444-1361 Scientek Instrumentation, Inc., Bldg. 1, Flowerfield, St. J a m e s , Ν. Υ. 11780. (516) 584-7200 Scientific Associates, Inc., 6200 S. Lindbergh Blvd., St. Louis, Mo. 63123. Scientific Balance & Instrument Co., 2650 S. W. Temple, Salt Lake City, Utah 84106. (801)485-1601 Scientific Development Co., P. O. Box 795, State College, Pa. 16801. (814) 237-4132 Scientific Gas Products Inc., 2330 Hamilton Blvd., S. Plainfield, N. J. 07080. (201) 754-7700 Scientific Glass & Instruments, Inc., P. O. Box 18306, Houston, Tex. 77023. (713) 928-5761 Scientific Glass Engineering Pty., Ltd., 1 1 1 , Arden St., N. Melbourne, Victoria, Australia 3051 . 329-6633 Scientific Industries, Inc., 150 Herricks Rd., Mineola, Ν. Υ. 11501. (516). 746-5200 Scientific Leasing Inc., 111 Founders Plaza, E. Hartford, Conn. 06108. (203) 528-3400 Scientific Products, 1430 Waukegan Rd., McGaw Park, III. 60085. (312) 973-3600 Scientific Research Instruments Corp., Sub. of G. D. Searle & Co., 6707 Whitestone Rd., Baltimore, M d . 21207. (301) 944-4020 Scientific Resources, Inc., 3300 Commercial Ave., Northbrook, III. 60062. (312)498-2920

Scientific Systems Corp., 9020 S. Choctaw Dr., Baton Rouge, La. 70815. (504) 926-6950 Scott Aviation, A Div. of A-T-O, Inc., 225 Erie St., Lancaster, Ν. Υ. 14086. (716) 683-5100 Scott Environmental Technology, Inc., Rt., 611 N., Plumsteadville, Pa. 18949. (215) 766-8861 Scott Testers, GCA Precision Scientific, 3737 W. Cortland, Chicago, III. 60647. (312) 227-2660 Searle Analytic, Inc., 2000 Nuclear Dr., Des Plaines, III. 60018. (312) 298-6600 Searle Chemicals, Inc., P. O. Box 8526, Chicago, III. 60680 (312) 982-7884 Seederer-Kohlbusch, Inc., 129-07 18th Ave., College Point, Ν. Υ. 11356.

(212) 762-1662 Seiscor Div., Seismograph SVC Corp., P. O. Box 1590, Tulsa, Okla. 74102. (918) 627-3330 Selas Corp. of America, Box 200, Dresher, Pa. 19025. (215)646-6600 Selas Flotronics, A Div. of Selas Corp. of America, Spring House, Pa. 19477. (215) 646-5950 The Sel-Rex Co., Div. of Oxy Metal Industries Corp. ( O M I ) , 75 River Rd., Nutley, N . J . 07110. (201)667-5200 Sensor Technology, Inc., 21012 Lassen St., Chatsworth, Calif. 9 1 3 1 1 . (213) 882-4100 Sensotec, Inc., 1400 Holly Ave., Columbus, Ohio 43212. (614) 294-5436 The Separations Group, 8738 Oakwood St., Hesperia, Calif. 92345. (714) 244-3833 SERFILCO, Div. Service Filtration Corp., 1415 Waukegan Rd., Northbrook, III. 60062. (312) 498-1010 Setaram, 101-103, rue de Seze, 69451 Lyon Cedex, France (78 ) 24 -1741 Sethco Manufacturing Corp., One Bennington Ave., Freeport, Ν. Υ. 11520. (516)623-4220 SGA Scientific Inc., 735 Broad St., Bloomfield, N . J . 07003. (201) 748-6600 SGL Abrasives, Div. SGL Industries, N. Pitt St. Extended, Carlisle, Pa. 17013.

(717) 243-3471 W. S. Shamban & Co., 11543 W. Olympic Blvd., Los Angeles, Calif. 90064. (213) 397-2195 Shandon Southern Instruments, Inc., 515 Broad St., Sewickley, Pa. 15143. (412) 741-8400 Sharpies-Stokes Div., Pennwalt Corp., 955 M e a r n s R d . , Warminster, Pa. 18974.

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(215) 672-7700 Shaw Moisture Meters, Rawson Rd., Westgate, Bradford, England E. H. Sheldon Equipment Co., 716 Nims St., Muskegon, Mich. 49443. (616) 726-5271 Sherer Div., Kysor Industrial Corp., 910 W. Industrial Rd., Marshall, Mich. 49068. (616)781-3911 Sherwin Williams Chemicals, A Div. of Sherwin Williams Co., P. O. Box 6520, Cleveland, Ohio 4 4 1 0 1 .

(216) 566-2344 Sherwood Medical Industries, Inc., 1831 Olive St., St. Louis, Mo. 63033. (314) 621-7788 Shimadzu Seisakusho, Ltd..Foreign Trade Dept., 14-5, Uchikanda 1-chome, Chiyoda-ku, Tokyo, Japan 296-2350 Shrader Analytical, Inc., 3450 Lovett Ave., Detroit, M i c h . 48210. (313) 894-4440 T. Shriver & Co., Inc., 808 Hamilton St., Harrison, N . J . 07029. (201) 484-2500 Siemens Corp., 186 Wood Ave., S., Iselin. N . J . 08830. (201)494-1000

AUGUST 1975 289 LG

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Sierra Instruments, Inc., 3756 N. Dunlop St., St. Paul, Minn. 55112. (612) 484-8543 Sigma Chemical Co., P. 0 . Box 14508, St. Louis, Mo. 63178. (314)771-5750 Sigmamotor, Inc., 14 Elizabeth St., Middleport, N. Y. 14105.

(716) 735-3616 Silar Labs., Inc., P. O. Box 86, Watervliet, N. Y. 12189. (518) 273-4300 Simco Co., Inc., 920 Walnut St., Lansdale, Pa. 19446. (215)368-2220 Simon Research Laboratory, 164 Division St., P.O. Box 58, Elgin, III.60120.

(312) 742-6333

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Simpson Electric Co., 853 Dundee, Elgin, 111.60120. (312)697-2260 Sloan Technology Corp., 535 E. Montecito St., Santa Barbara, Calif. 93103. (805) 963-4431 SMI, (SpectraMetrics, Inc.), 204 Andover St., Andover, Mass. 01810. (617) 475-7015 G. Frederick Smith Chemical Co., 867 McKinley Ave., P. O. Box 23344, Columbus, Ohio 43223. (614) 224-5343 Smith-Underwood Laboratories, 1023 Troy Court, Troy, Mich. 48084. (313) 585-2150 Smyth Precision Glass Mfg. Co., 3127 Central Ave., Union City. N. J. 07087. (201) 348-6589 Foster D. Snell, Inc., Hanover Rd., Florham Park, N . J . 07932. (201) 377-6700 Sno-Trik Co., 32550 Old S. Miles Rd., Cleveland, Ohio 44139. Sola Electric, Div. of Sola Basic Industries, 1717 Busse Rd., Elk Grove Village, III. 60007. (312) 439-2800 So-Low Environmental Equipment Co., 1743 Cleneay Ave., Cincinnati, Ohio 45212. (513)631-8903 Soltec Corp., 10747 Chandler Blvd., N. Hollywood, Calif. 91601. (213) 985-6100 Sonic Corp., 90 Connecticut Ave., Norwalk, Conn. 06856. (203) 838-4717 Sonicor Instrument Corp., 18 Sarah Dr., Farmingdale, Ν. Υ. 11735. (516) 293-6757 Southern Cross Manufacturing Corp., 437 Wolf Ave., Chambersburg, Pa. 17201. (717) 264-7158 Special Instruments & Machinery Co., 6 L a m e s a A v e . , Eastchester, Ν. Υ. 10707. (914) 779-8981 Specialty Organics, Inc., 5263 N. 4th St., Irwindale, Calif. 91706. (213) 962-2008 Spectral Imaging, Inc., 572 Annursnac Hill Rd., Concord, Mass. 01742. (617) 259-8330 Spectra Optics, 12317 Gladstone Ave., Sylmar, Calif. 91342. (213) 361-0949 Spectra-Physics, Inc.-LPD, 1250 W. Middlefield Rd., Mt. View, Calif. 94040. (415) 961-2550 Spectra-Physics, 2905 Stender Way, Santa Clara, Calif. 95051. (408) 249-5200 Spectrex Corp., 3594 Haven Ave., Redwood City, Calif. 94063. (415) 365-6567 Spectrix Corp., 7245 Wynnwood, Houston, Tex. 77008. (713)864-0179 Spectro Products, Inc., 385 State St., N. Haven, Conn. 06473. (203)281-0121 Spectrotherm Corp., 3040 Olcott St., Santa Clara, Calif. 95051. (408) 984-8500 Spectrum Instruments, Inc., 35 Grand St., New Rochelle, N. Y. 10801. (914) 632-4655 Spectrum Medical Industries, Inc., 60916 Terminal Annex, Los Angeles, Calif. 90054. (213)323-1120 290 LG AUGUST 1975

Spellman High-Voltage Electronics Corp., 1930 Adee Ave., Bronx, Ν. Υ. 10469. (212) 671-0300 Spex Industries, Inc., 3880 Park Ave., Metuchen, N. J. 08840. (201) 549-7144 Sprague Electric Co., Marshall St., N. Adams, Mass. 01247. (413) 664-4411 Sprayway, Inc., 484 Vista Ave., Addison, 111.60101. (312)628-0998 SSR Instrument Co., 1001 Colorado Ave., Santa Monica, Calif. 90401. (213) 451-8701 Stackpole Carbon Co., 201 Stackpole St., St. Marys, Pa. 15857. (814)781-1234 Staco, Inc., 2240 E. Third St., Dayton, Ohio45403. (513)253-1191 A. E. Staley Mfg. Co., Box 151, Decatur, III. 62525. (217)423-4411 Standard Electric Time Corp., 89 Logan St., Springfield, Mass. 01101. (413) 732-1141 Standard X-Ray Co., 4401 W. 26th St., Chicago, III. 60623. (312) 277-7600 The Staplex Co.,Air Sampler Div., 777 Fifth Ave., Brooklyn, Ν. Υ. 11232. (212) S 0 8 - 2 3 3 5 Star Tank & Filter Corp., 875 Edgewater Rd., Bronx, Ν. Υ. 10474. (212) 323-6450 Statham Instruments. See listings lor Gould, Inc. Stellite Div., Cabot Corp., 1020 W. Park Ave., Kokomo, Ind. 4 6 9 0 1 . (317) 457-8411 C.W.Stevens, Inc., P. O. B o x 6 1 9 , Kennett Square, Pa. 19348. (215) 444-0616 Stewart Laboratories, Inc., 5815 Middlebrook Pike, Knoxville, Tenn. 37921. (615)588-6401 Herman H. Sticht Co., Inc., 27 Park PI., New York, Ν. Υ. 10007. (212) 732-8163 Stokes Div., Pennwalt Corp., 5500 Tabor Rd., Philadelphia, Pa. 19120. (215) 289-0100 Stoelting Co., 1350 S. KostnerAve., Chicago, III. 60623. (312) 522-4500 Stohier Isotope Chemicals, Inc., 49 Jones Rd., Waltham, Mass. 02154. (617) 891-1827 Stow Laboratories, Inc., Kane Industrial Dr., Hudson, Mass. 01749. (617) 562-9347 Strem Chemicals, Inc., 150 Andover St., Danvers, Mass. 01923. (617) 774-8223 The Strong-Scott Mfg. Co., 333 Ν. Ε. Taft St., Minneapolis, Minn. 55413. (612) 331-4370 Structure Probe, Inc., 535 E. Gay St., P. O. Box 342, West Chester, Pa. 19380. (215) 436-5400 Sturtevant Mill Co., 103 Clayton St., Dorchester, Mass. 02122. (617) 825-6500 Sunshine Chemical Corp., P. O. Box 17041, W. Hartford, Conn. 06117. (203) 232-9227 Sunshine Scientific, 1810 Grant Ave., Philadelphia, Pa. 19115. (215) 673-5600 Sunbeam Equipment Corp., 18 Mercer St., Meadville, Pa. 16335. (814) 724-1400 Sundstrand Data Control, Inc., Overlake Industrial Park, Redmond, Wash. 98052. (206)885-3711 Supelco, Inc., Supelco Park, Bellefonte, Pa. 16823. (814) 359-2784 Supercon Inc., 9 Erie Dr., Natick, Mass. 01760. (617)655-0500 Superior Air Products Co., 2001 Jernee Mill Rd., Sayreville, N. J. 08872. (201) 238-1900 The Superior Electric Co., 383 Middle St., Bristol, Conn. 06010. (203) 582-9561 Superior Signal Co., Inc., W. Greystone Rd., Spotswood, N. J. 08884. (201) 251-0800

Superior Tube Co., P. O. Box 191, Norristown, Pa. 19404.

(215) 275-2070 The Surety Rubber Co., P. O. Box 97, N. High St., Carrollton, Ohio 44615.

(216) 627-2166 Surface Combustion Div., Midland-Ross Corp., 2375 Dorr St., Toledo, Ohio 43691. (419)536-4611 Syntex Analytical Instruments, Inc., 10040 B u b b R d . , Cupertino, Calif. 95014. (408) 257-7100 Syracuse University Research Corp., Merrill La., University Heights, Syracuse, Ν. Υ. 13210. (315) 477-8710 Systron-Donner Corp., One Systran Dr., Concord, Calif. 94518. (415) 676-5000 TA Mfg. Corp., 375 W. Arden Ave, Glendale. Calif. 91203. (213) 240-4600 Taber Pump Co., Inc., P. O. Box 1071, Elkhart, Ind. 46514. (219) 293-6578 Talboys Engineering Corp., 12 Palisade Ave., Emerson, N. J. 07630. (201) 262-5445 Τ & S Brass & Bronze Works, Inc., 128 Magnolia Ave., Westbury, L. Ι., Ν. Υ. 11590. (516)334-5104 T&T Technology, 4820 Dale Rd., McFarland, Wis. 53558. (608) 838-3171 Taylor Instrument/Consumer Products Div., Sybron Corp., Arden, N. C. 28704. (704) 684-8111 Chas. Taylor, Div. NL Industries, 8361 Broadwell Rd., Cincinnati, Ohio 45255. (513) 474-3100 TC Systems, Inc., 3303 S. Rice Ave., Houston, Tex. 77027. (713)626-3020 TCS, P. O. Box 1 4 1 , Southampton, Pa. 18966. (215)947-2275 Tech Glass Co., Inc., 592 N. W. Blvd., Vineland, N. J. 08360. (609) 691-7839 Techne Incorporated, 3700 Brunswick Pike, Princeton, N. J. 08540. (609) 452-9275 Technical Equipment Corp., 917 Acoma St., Denver, Colo. 80204. (303) 623-0258 Technical Instruments, 441 Washington Ave., North Haven, Conn. 06473. (203) 239-2503 Technical Research Instruments, Inc., Shoemaker Rd. at Clubhouse Rd., King of Prussia, Pa. 19406. (215) 265-9250 Technicon Industrial Systems, 511 Benedict Ave., Tarrytown, Ν. Υ. 10591. (914)631-8000 Technicon Chemicals & Supplies, 511 Benedict Ave., Tarrytown, Ν. Υ. 10591. (914)631-8000 Technicraft International, Inc., 133 N. Bayshore Blvd., San Mateo, Calif. 94401. (415)347-7061 Technics, Inc., 5510 Vine St., Alexandria, Va. 22310. (703) 971-9200 Technilab Instruments, Inc., Pequannock, N . J . 07440. (201)694-0500 Technipower, Inc., Benrus Center, Ridgefield, Conn. 06877. (203) 431-1300 Tegal Corp., 860 Wharf St., Richmond, Calif. 94804. (415)232-1757 Tekmar Co., P. O. Box 37202, Cincinnati, Ohio 45222. (513)761-0633 Teknika, Inc., P. O. Box 1123, Dayton, Ohio 45401. (513)253-7111 Tektronix, Inc., P. O. Box 500, Beaverton, Ore. 97077. (503) 644-0161 Teledyne Analytical Instruments, 333 W. Mission Dr., San Gabriel, Calif. 91776. (213) 576-1633 Teledyne Farris Engineering, 400 Commercial Ave., Palisades Park, N. J. 07650. (201)944-6300

LABORATORY GUIDE

Teledyne Hastings-Raydist, P. O. Box 1275, Hampton, Va. 23661. (804) 723-6531 Teledyne Isotopes (N.J.), 50 Van Buren Ave., Westwood, N. J. 07675. (201) 664-7070 Teledyne Isotopes, 4062 Fabian St., Palo Alto, Calif. 94303. (415)326-7500 Teledyne Philbrick, Allied Dr. at Rt. 128, Dedham, Mass. 02026. (617) 329-1600 Teledyne Readco, 901 S. Richland Ave., York, Pa. 17405. (717)848-2801 Teledyne Republic Manufacturing, 15655 Brookpark Rd., Cleveland, Ohio 44142. (216) 267-2700 Teledyne Semiconductor, 1300 Terra

Bella Ave., Mountain View, Calif. 94040. (415)968-9241 Teledyne Taber, 455 Bryant St., N. Tonawanda, Ν. Υ. 14120. (716) 694-4000 Telmar, Inc., 1150 W. Third Ave., Columbus, Ohio 43212. (614) 299-2165 Tem-Pres Research Div., 1401 S. Atherton St., State College, Pa. 16801. (814) 237-7631 Tennelec, Inc., 601 Turnpike, Oak Ridge, Tenn. 37830. (615) 483-8404 Tenney Engineering, Inc., 1091 Springfield Rd., Union, N . J . 07083. (201) 686-7870 Tescom Corp., 2600 Niagara La., N., Minneapolis, Minn. 5 5 4 4 1 . (612) 546-4351 Testing Machines, Inc., 400 Bayview Ave., Amityville, Ν. Υ. 11701. (516) 842-5400 Tetrahedron Associates, Inc., 7605 Convoy Court, San Diego, Calif. 92111. (714) 277-2820 Texas Instruments, Inc., 34 Forest St., Attleboro, Mass. 02703. (617) 222-2800 Texas Instruments, Inc., Digital Systems Div., P. O. Box 1444, Houston, Tex. 77001. (713)777-1301 Texas Nuclear Corp., 9101 Hwy. 183 N., Austin, Tex. 78766. (512)836-0801 Texscan Corp., 2446 N. Shadeland Ave., Indianapolis, Ind. 46219. (317) 357-8781 Theall Engineering Co., Box 362, Oxford, Pa. 19363. (215)932-3488 Thermal American Fused Quartz Co., Rt. 202 and Change Bridge Rd., Montville, N . J . 07045. (201)334-7770 Thermatronics Corp., 29 Dwight PI., Fairfield, N. J. 07006. (201) 227-6580 Thermco Instrument Corp., P. O. Box 309, U.S. Hwy. 20, LaPorte, Ind. 46350. (219) 362-6258 Thermionics Laboratory, Inc., 22815 Sutro St., Hayward, Calif. 94540. (415)538-3304 Thermo-Electric Co., 1948 Columbus Rd.,

Cleveland, Ohio 44113. (216) 241-6762 Thermo Electric Co., Inc., 109 5th St., Saddle Brook, N . J . 07662. (201) 843-5800 Thermoelectrics Unlimited, Inc., 1202 Harrison Ave., Holly Oak Terrace, Wilmington, Del. 19809. (302) 798-5360 Thermolyne Corp., 2555 Kerper Blvd.,

Dubuque, Iowa 52001. (319) 556-2241 Thermometer Corp. of America, Div. ot ΑΤΟ, 567 Ε. Pleasant St.. Springfield, Ohio45501. (513)325-0456 Thermon Mfg. Co., P. O. Box 609, San Marcos, Tex. 78666. (512)392-5801 Thermo-Systems, Inc., 2500 Cleveland Ave., N., St. Paul, Minn. 55113. (612) 633-0550 Thermovac Industries Corp., 41 Decker St., Copiague, Ι . Ι., Ν. Υ. 11726.

Theta Industries, Inc., Box 630, 26 Valley Rd., Port Washington, Ν. Υ. 11050. (516)883-4088 Arthur H. Thomas Co., P. O. Box 779, Vine St. at Third, Philadelphia, Pa. 19105. (215) M A 7 - 5 6 0 0 Time Share Peripherals Corp., Rt. 6, Bethel, Conn. 0 6 8 0 1 . (203) 743-7624 TIMET, 1140 Bloomfield Ave., W. Caldwell, N. J . 07006. (201) 575-9500 Titanium Metals Corp. of America, Affil. of Ν L Industries, Inc., 1140 Bloomfield Ave., W. Caldwell, N . J . 07006. (201) 575-9500 Tivian Laboratories, Inc., 330 Silver Spring St., Providence, R. I. 02904. (401)421-1208 T-M Vacuum Products Co., Warrington & Rowland Sts., Riverton, N. J . 08077. (609) 829-2000 Toledo Scale, Div. of Reliance Electric Co., 5225 Telegraph Rd., Toledo, Ohio 43612. (419) 470-6200 Tomco, Div. of Commercial Screw Products, Inc., 712 E. 163rd St.,

Cleveland, Ohio 44110. (216) 268-0423 Tomorrow Enterprises, P. O. Box 1466, Portsmouth, Ohio 45662. (614) 353-3964 Torr Vacuum Products, Inc., 7121 Hayvenhurst Ave., Van Nuys, Calif. 91406. (213)787-1210 The Torsion Balance Co., 125 Ellsworth St.. Box 535, Clifton, N . J . 07012. (201) 473-6900 TOTCO, Div. of Baker Oil Tools, Inc., 506 Paula Ave., Glendale, Calif. 91201. (213) 245-7411 Toyo Kagaku Sangyo Co. Ltd., No. 7, 3-Chome Hon-cho, Nihonbashi, Chuo-ku, Tokyo, Japan Tracor, Inc., 6500 Tracor Lane, Austin, Tex. 78721. (512)926-2800 Tracor Northern, Inc., 2551 W. Beltline Hwy., Middleton, Wis. 53562. (608) 836-6511 Trane Thermal Co., Brook Rd., Conshohocken, Pa. 19428. (215) 828-5400 Transidyne General Corp., 462 S. Wagner Rd., Ann Arbor, Mich. 48106. (313) 769-1900 Trent, Inc., 201 Leverington Ave., Philadelphia, Pa. 19127. (215) 1 V 2 - 5 0 0 0 Tridak, Inc., 5 Valley Rd., Danbury, Conn. 06810. (203)744-3060 Triplett Corp., 286 Harmon Rd., Bluffton,

Ohio 45817. (419)358-5015 Tri-R Instruments, Inc., 48 Merrick fid., Rockville Centre, Ν. Υ. 11570. (516) 766-5134 Henry Troemner, Inc., 6825 Greenway Ave., Philadelphia, Pa. 19142. (215) 724-0800 Tropel, Inc., P. O. Box 164, Fairport, N. Y. 14450. (716)377-3200 Tudor Scientific Glass Co., 555 Edgefield Rd., Belvedere, S. C. 29841. (803) 279-4666 Turner Associates, 2524 Pulgas Ave., Palo Alto, Calif. 94303. (415) 324-0077 Tuthill Pump Co., 12500 S. Crawford Ave., Chicago, III. 60658. (312) 389-2500 Twin City Testing Corp., 107-111 Goundry St., No. Tonawanda, Ν. Υ. 14120. (716) 693-6303 Ultra Carbon Corp., P. O. Box 747, Bay City, Mich. 48706. (517) 894-2911 Ultrascience, Inc., 2504 Gross Point Rd., Evanston, III. 6 0 2 0 1 . (312) 869-2200 Ultrasonic Instruments International Ltd., 165 LG Marine St., Farmingdale, Ν. Υ. 11735. (516)293-5577 Ultrasonics Corp., P. O. Box 672, Hwy. 23, Pipestone, Minn. 56164.

(507) 825-5441

Ultra-Violet Products, Inc., 5100 Walnut Grove Ave., San Gabriel, Calif. 91778.

(213) 285-3123 John Unertl Optical Co., 3551-55 East St., Pittsburgh, Pa. 15214. (412) 321-2215 Unigon Industries, Inc., 1 Park Ave., Mt. Vernon, Ν. Υ. 10550. (914)699-7545 Uniloc, Inc., Sensors Div., 2400 Barranca Rd., Irvine, Calif. 92705. (714) 546-8700 Unilux, Inc., 290 Lodi St., Hackensack, N . J . 07601. (201)489-0800 Unimatic Engineers Ltd., Granville Road Works, 122 Granville Rd., Cricklewood, London NW2, England (01) 455-0071 Unimetrics Corp., 1853 Raymond Ave., Anaheim, Calif. 9 2 8 0 1 . (714) 879-3777 Union Carbide Corp., Carbon Products Div., 270 Park Ave., New York, Ν. Υ. 10017. (212)551-3763 Union Carbide Corp., Chemicals & Plastics, 270 Park Ave., New York, N. Y. 10017. (212) 551-3763 Union Carbide Corp., Components Dept., 270 Park Ave., New York, Ν. Υ. 10017. (212)551-3763 Union Carbide Corp., Consumer Products Div., 270 Park Ave., New York, Ν. Υ. 10017. (212)551-3763 Union Carbide Corp., Crystal Products Dept., 270 Park Ave., New York, Ν. Υ.

10017. (212)551-3763 Union Carbide Corp., Ferroalloys Div., 270 Park Ave., New York, Ν. Υ. 10017. (212)551-3763 Union Carbide Corp., Linde Div., 270 Park Ave., New York, Ν. Υ. 10017. (212) 551-3763 Union Carbide Corp., Materials Systems Div., 270 Park Ave., New York, Ν. Υ. 10017. (212)551-2345 Union Carbide Corp., Mining & Metals Div., 270 Park Ave., New York, Ν.Ύ. 10017. (212)551-3763 Union Carbide Corp., Molecular Sieve Dept., 270 Park Ave., New York, Ν. Υ. 10017. (212)551-4607 Union Carbide Corp., Sterling Forest Research Center, Longmeadow Rd., P. 0 . Box 324, Tuxedo, Ν. Υ. 10987. (914) 351-2131 Uniroyal, Inc., 1230 Ave. of Americas, New York, Ν. Υ. 10020. (212) 489-4000 Uni-Seal Decomposition Vessels, Ltd., P.

O. Box 9463, Haifa, Israel 31094. (04) 24-4990 United Electric Controls Co., 85 School St., Watertown, Mass. 02172. (617) 926-1000 United Mineral & Chemical Corp., 129 Hudson St., New York, Ν. Υ. 10013. (212) 966-4330 U. S. Fused Quartz Co., Inc., 7 Spielman Rd., Fairfield, N . J . 07006. (201) 227-6010 U. S. Plastic Corp., 1550 Elida Rd., Lima, Ohio 45805. (419)228-2242 U. S. Steel Corp., 600 Grant St., Pittsburgh, Pa. 15230. (412) 433-1121 U. S. Steel Corp., Oilwell Div., 2001 N. Lamar St., Dallas, Tex. 75202.

(214) 747-8921 U.S. Steel Leasing Co., Inc., 71 Broadway, New York, Ν. Υ. 10006. (212) 558-4444 U.S. Steel Supply, Div. of U.S. Steel, 13535 S. Torrence Ave.,

Chicago, III. 60633. (312) 646-3211 United States Testing Co., Inc., 1415 Park Ave., Hoboken, N. J. 07030. (201) 792-2400 United Technical Corp., 83 Keystone Dr., Ledminster, Mass. 01453.

(617) 537-9737

(516) 842-8600 LABORATORY GUIDE

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Unitron Scientific, Inc., 66 Needham St., Newton Highlands, Mass. 02161. (617) 969-8600 Universal Monitor Corp., 430 N. Halstead St., Pasadena, Calif. 91107. (213) 351-8877 Universal Relay Corp., 42 White St., New York, N.Y. 10013. (212)925-6900 Universal Voltronics Corp., 27 Radio Circle Dr., Mt. Kisco, Ν. Υ. 10549. (914) 241-1300 The Upjohn Co., Fine Chemical Marketing, Kalamazoo, Mich. 49001. (616) 382-4000 U.S.S. Agri-Chemicals, Div. of U.S. Steel Corp., Title Bldg., 30 Pryor St. S.W., Atlanta, Ga. 30303. (404) 522-2641 Uthe Technology International, 320 N. Mathilda Ave., Sunnyvale, Calif. 94086. (408) 738-3301 UTI, 325 N. Mathilda Ave., Sunnyvale, Calif. 94086. (408) 738-3301 Utopia Instrument Co., Caton Farm Rd.,

P. O. Box 863, Joliet, III. 60434.

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(815) 727-5431 Vactec, Inc., 2423 Northline Ind. Blvd., Maryland Heights, Mo. 63043. (314) 872-8300 Vactronic Lab. Equipment, Inc., 65 Brightside Ave., E. Northport, Ν. Υ. 11731. (516)261-2660 Vacuum Accessories Corp., 390 Central Ave., Bohemia, Ν. Υ. 11716. (516) 589-6464 Vacuum/Atmospheres Co., 4652 W. Rosecrans Blvd., Hawthorne, Calif. 90250. (213)644-0251 Vacuum Research Mtg. Co., Div. of Soiltest, Inc., 3100 Crow Canyon Rd., San Ramon, Calif. 94583. (415) 837-7241 Valentine Instrument Co., 2184 Primrose Ave., Vista, Calif. 92083. (714) 727-0839 Valley Forge Instrument Co., Inc., 55 Buckwalter Rd., Phoenixville, Pa. 19460. (215)933-1806 Vangard Systems, Inc., 295 Treadwell St., Hamden, Conn. 06514. (203) 239-2501 Vanton Pump & Equipment Corp., 201 Sweetland Ave., Hillside, N. J . 07205. (201) 688-4216 Vanzetti Infrared & Computer Systems, Inc., 607 Neponset St., Canton, Mass. 02021. (617)828-4650 Varian Associates. See listings lor Varian Divisions Varian Data Machines, 2722 Michelson Dr., Irvine, Calif. 92664. (714) 833-2400 Varian Electron Device Group, 611 Hansen Way, Palo Alto, Calif. 94303. (415) 493-4000 Varian Instrument Div., 611 Hansen Way, Palo Alto, Calif. 94303. (415) 493-4000 Varian M a t / U . S . Operations, 25 Rt. 22, Springfield, N . J . 07081. (201) 467-3660 Varian National Electronics, P. O. Box 269, Geneva, III. 60134. Varian Tectron, 611 Hansen Way, Palo •Alto, Calif. 94303. (415)493-8100 Varian Radiation, 611 Hansen Way, Palo Alto, Calif. 94303. (415)493-4000 Varian Vacuum Div., 611 Hansen Way, Palo Alto, Calif. 94303. (415) 493-4000 Vari-Tech Co., 546 Leonard St., N. W., Grand Rapids, Mich. 49504. (616) 459-7281 VAR-LAC-OID Chemical Co., 666 S. Front St., Elizabeth, N . J . 07202. (201) 289-3630 Veeco Instruments, Inc., Terminal Dr., Plainview, Ν. Υ. 11803. (516) 681-8300 Veeder-Root, 70 Sargeant St., Hartford, Conn. 06102. (203)527-7201 292 LG AUGUST 1975

Velonex, A Div. of Varian, 560 Robert Ave., Santa Clara, Calif. 95050. (408) 244-7370 Ventron Corp., Alfa Products, 152 AndoverSt., Danvers, Mass. 01923. (617) 777-1970 Veriflo Corp., 250 Canal Blvd., Richmond, Calif. 94804. (415) 235-9590 Vernitron Medical Products, Inc., Empire Blvd. & Terminal La., Carlstadt, N. J. 07072. (201)641-5500 Versatec, Inc., 2805 Bowers Ave., Santa Clara, Calif. 95050. (408) 988-2800 Vertrod Corp., 2037 Utica Ave., Brooklyn, Ν. Υ. 11234. (212) 241-8080 Vic Mfg. Co., Air Pollution Control Div., 1620 Central Ave., N.E., Minneapolis, Minn. 55413. (612)781-6601 Vickers Instruments, Inc., 100 A Commerce Way, Woburn, Mass. 01801. (617)935-3113 Victor Comptometer Corp., 3900 N. Rockwell St., Chicago, III. 60618. (312) 539-8200 Victoreen Instrument, Div. of Sheller-Globe Corp., 10101 Woodland Ave., Cleveland, Ohio 44104. (216) 795-8200 Victory Engineering Corp., Victory Rd., Springfield, N . J . 07081. (201) 379-5900 Vidar Autodata, Inc., 265 N. Whisman Rd., Mt. View, Calif. 94043. (415)965-3050 Viking Pump Div., Houdaille Industries, Inc., 4th & Neymeyer Sts., Cedar Falls, Iowa 50613. (319) 266-1741 Virginia Chemicals Inc., 3340 W. Norfolk Rd., Portsmouth, Va. 23703. (703) 484-5000 The VirTisCo., Route 208, Gardiner, N. Y. 12525. (914)255-5000 Visual Color Metrics, Inc., 870 Willis Ave., Albertson, Ν. Υ. 11507. (516) 746-0254 V Κ Enterprises, Inc., 5 Ava Court, P. O. Box2188L, N. Babylon, Ν. Υ. 11703. (516) 242-1087 Voland Corp., 27 Centre Ave., New Rochelle, N. Y. 10802. (914) 636-2014 Volu-Sol Medical Industries, 1034 S. Commerce, Las Vegas, Nev. 89106. (702) 384-1731 Vortec Corp., 4511 Reading Rd., Cincinnati, Ohio 45229. (513) 242-7474 Vulcan Laboratories, Inc., 408 Auburn Ave., Pontiac, Mich. 48058. (313) 334-4747 VWR Scientific, P. O. Box 3200, San Francisco, Calif. 94119. (415) 469-0100 Wabash Metal Products Co., Inc., 1569 Morris St., P. O. Box 298, Wabash, Ind. 46992. (219)563-1184 Wahl-Henlus Institute, Inc., 4206 N. Broadway, Chicago, III. 60613. (312) EA7-7647 Wale Apparatus Co., 400 Front St., Hellertown, Pa. 18055. (215) 838-7047 Walker Scientific, Inc., 17 Rockdale St., Worcester, Mass. 01606. (617) 852-3674 Wallace & Tiernan, Div. of the Pennwalt Corp., 25 Main St., Belleville, N. J. 07109. (201)759-8000 Wang Laboratories, Inc., 836 North St., Tewksbury, Mass. 01876. (617) 851-4111 Waring Products Div., Dynamics Corp. of America, Route 44, New Hartford, Conn. 06057. (203) 379-0731 WATCON, Inc., 2215 S. Main St., South Bend, Ind. 46613. (219)287-3397 Waters Associates Inc., Maple St., Milford, Mass. 01757. (617) 478-2000

Waters Instruments, Inc., 2411 7th St., N. W., P.O. Box 6117, Rochester, Minn. 55901. (507)288-7777 Watkins-Johnson Co., 3333 Hillview Ave., Palo Alto, Calif. 94304. (415)493-4141 WeatherMeasure Corp., 3213 Orange Grove Ave., N. Highlands, Calif. 95660. (916)481-7565 Webber Manufacturing Co., Inc., P. O. Box 217, 8634 Brookville Rd., Indianapolis, Ind. 46206. (317) 357-8681 Weksler Instruments Corp., 80 Mill Rd.. Freeport, Ν. Υ. 11520. (516) 623-0100 Welsbach Ozone Systems Corp., 3340 StokleySt., Philadelphia, Pa. 19129. (215) 226-6900 WEMCO Instrumentation Co., 3915 Tharp St., Houston, Tex. 77003. (713)224-2511 Wescan Instruments, Inc., 3018 Scott Blvd., Santa Clara, Calif. 95050. (408) 248-3519 West Coast Technical Service, Inc., 1.7605 Fabrica Way, Suite D, Cerritos, Calif. 90701. (213) 921-9831 West Instrument, Div. of Gulton Industries, Inc., 3860 N. River Rd., Schiller Park, III. 60176. (312) 678-6400 Westinghouse Electric Corp., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412)255-3800 Westinghouse Electric Corp., Aerosp. & Elec. Sys. and Sys. Development, Westinghouse Bldg., Pittsburgh, Pa. 15222. (412)255-3800 Westinghouse Electric Corp., Computer & Instrumentation Div., 200 Beta Dr., Pittsburgh, Pa. 15238. (412) 782-1730 Westinghouse Electric Corp., Control Products Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Electronic Systems Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Electronic Tube Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., General Control Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Industrial Equipment Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Κ W Battery Co. Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Lamp Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412)255-3800 Westinghouse Electric Corp., Low Voltage Breaker Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Luxaire Inc. Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412)255-3800 Westinghouse Electric Corp., Major Appliance Sales Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Relay Instrument Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Semiconductor Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Sharon Transformers Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Small Power Transformers, Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Westinghouse Electric Corp., Specialty Transformer Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 LABORATORY GUIDE

Westinghouse Electric Corp., Wire Div., Westinghouse Bldg., Pittsburgh, Pa. 15222. (412) 255-3800 Weston Instruments, Inc., 614 Frelinghuysen Ave., Newark, N. J . 07114. (201)243-4700 Westvaco Corp., Drawer 2 0 1 , Covington, Va. 24426. (703)962-2111 Whatman, Inc., 9 Bridewell PI., Clifton, N . J . 07014. (201) 777-4825 Wheaton Scientific, 1000 N. Tenth St., Millville, N. J. 08332. (609) 825-1400 Whitey Co., 5679 Landregan St., Oakland, Calif. 94662. Whittaker Corp., Research & Development Div., 3540 Aero Court, San Diego, Calif. 92064. (714) 277-3040 Edwin L. Wiegand, Div. of Emerson Electric Co., 7888 Thomas Blvd., Pittsburgh, Pa. 15208. (412) 242-6400 Wild Heerbrugg Instruments, Inc., 465 Smith St., Farmingdale, Ν. Υ. 11735. (516) 293-7400 Wilkens-Anderson Co., 4525 W. Division St., Chicago, III. 6 0 6 5 1 . (312) E V 4 - 4 4 3 3 Willey Corp., 720 E. Fee Ave., Melbourne, Fla. 3 2 9 0 1 .

(305) 727-2046

Wilks Scientific Corp., P. O. Box 449, 140 Water St., S. Norwalk, Conn. 06856. (203)853-1616 Williamson Corp., 1152 Main St., Concord, Mass. 01742. (617) 369-9607 Wilmad Glass Co., Inc., Route 40 & Oak Rd., Buena, N. J. 08310. (609) 697-3000 Winthrop Laboratories, Special Chemicals Dept., 90 Park Ave., New York, Ν. Υ. 10016. (212)972-2632 Wire Cloth Manufacturers, Inc., 133 Kings Ave., Madison, N . J . 07940. (201) 822-3000 N. Wood Counter Laboratory, Inc., 1525 E. 53rd St., Chicago, III. 60615. (312) 324-1114 C. N. Wood Mfg. Co., Newtown Industrial Commons, Newtown, Pa. 18940. (215) 968-4268 Worcester Controls Corp., 125 Hartwell St., West Boylston, Mass. 01583. (617) 835-6041 Worden Quartz Products, Div. of Ruska Instrument Corp., 6121 Hillcroft Ave., P. O. Box 36010, Houston, Tex. 77036. (713) 774-2533 Worthington Biochemical Corp., Halls Mills and Oakerson Rds., Freehold, N. J . 07728. (201)462-3838

WSF Industries, Inc., 7 Hackett Dr., Tonawanda, Ν. Υ. 14150. (716) 692-4930 Wyle Labs., 128 Maryland St., El Segundo, Calif. 90245. (213) 678-4251 Xenon Corp., 66 Industrial Way, Wilmington, Mass. (617) 658-8940 Yardney Electric Corp., 82 Mechanic St., Pawcatuck, Conn. 0 2 8 9 1 . (203) 599-1100 Yellow Springs Instrument Co., Inc., P. O. Box 279, Yellow Springs, Ohio 45387. (513) 767-7242 Yorktown Research, Inc., 315 Phillips Ave., S. Hackensack, N . J . 07606. (201) 440-2710 Zeebac Inc., 141 Fourth Ave., Berea, Ohio44017. (216)243-2433 Carl Zeiss, Inc., 444 Fifth Ave., New York, Ν. Υ. 10018. (212)736-6070 Zena Co., Davis & S. Clinton Ave., S. Plainfield, N . J . 07080. (201) 754-4109 Zeta-Meter, Inc., 1720 First Ave., New York, N. Y. 1Ô028. (212)348-4100 ZygoCorp., Laurel Brook Rd., Middlefield, Conn. 06455.

(203) 347-8506

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AUGUST 1975 293 LG