Product C a p s u l e s justable flow pump, 26A-6; and boron apparatus, 26A-7. Laboratory Equip ment Corp., St. Joseph 8, Mich. 26 A-1 to 7
Laboratory Instruments. Circle 32A1 for complete information on the Perkin-Elmer Model 21 infrared spectro photometer that provides a rapid analysis, identifies and determines con centration of components. Also avail able is information on company's flame photometer (circle 32A-2) and vapor fractometer (circle 32A-3). Perkin-Elmer Corp., 2135 Summer St., Stamford, Conn. 3 2 A - 1 , 2, 3
Laboratory Furniture. 180-page cata log on company's line of fireproof, waterproof, corrosion resistant, rust proof laboratory furniture. Metalab Equipment Co., 254 Duffy Ave., Hicksville, L. Ι., Ν. Υ. 49Α Laboratory Instruments. Circle in dicated numbers for detailed bulletins on the following laboratory instruments: Beckman direct-reading flame pho tometer, 27A-1; abc "Quick Chex" balance, 27A-2; Bausch & Lomb Abbe3L refractometer, 27A-3; and Inter national centrifuge, 27A-4. Scientific Glass Apparatus Co., Inc., Bloomfield, N. J. 27A-1 to 4
Mercury Vapor Detectors. Circle 60A-1 for a bibliography on the mercury vapor hazard and literature on different models of company's mercury vapor meter (portable, ultra-violet photom eters, calibrated in mercury concen trations). Harold Kruger Instruments, Box 164, San Gabriel, Calif. 60A-1 Ovens. Supplement offered on the "Blue M " laboratory oven. Grey en ameled steel or stainless steel exterior, stainless steel interior. Temperature ranges up to 288° C. Response sensi tivity ±V2° C. Ace Glass Inc., Vineland, N . J. 10A
Laboratory Instruments. Circle in dicated numbers for full information on analytical instruments used for: flame photometry, 52A-1; pH, automatic titration, 52A-2; fluorimetry, 52A-3; nephelometry, 52A-4; spectrochemistry 52A-5; and colorimetry, 52A-6. Cole man Instruments, Inc., 318 Madison St., Maywood, 111. 52A-1 to 6
Ovens. Complete information avail able on cylindrical oven that may be set for automatic regulation from
approximately room temperature to 210° C. Heating elements completely surround the chamber. 115-230 volt, 50-60 cycles. Central Scientific Co., 1708 Irving Park Rd., Chicago 13, 111. 18A Ovens. with one Insulated range to Appliance
Catalog available on oven cubic foot work chamber. double walls. Temperature 200° Centigrade. National Co., Portland, Oregon 46A-2
Ovens, Vacuum. Bulletin available on the "Thelco" oven for general drying, conditioning and annealing. Also effective for the safe, rapid drying of delicate materials. 8" wide by 12" deep by 6" high. New York Labora tory Supply Co., Inc., 76 Varick St.. N. Y. 13, Ν. Υ. 59A-1 pH Meters. Bulletin available on company's complete line of pH meters incorporating modern electronic tubes and circuits. Simple in operation and maintenance, featuring sealed amplifier plug-in units. Photovolt Corp., 95 Madison Ave., N. Y. 16, Ν. Υ. 30Α-1 {Continued on page 48 A)
SERVALL®
COORS U.S.A.
ANGLE CENTRIFUGES 5,000-rpm—3,500 χ G
EAPORATING
Dishes Suitable for a variety of laboratory uses A large range of sizes available— some with black glaze interior Our 1956 Catalog offers
Write for Bulletin AC-81
2*a*tiity Sa4ti*Ufi in a Aieu* PachafUtCf, Ρηοψια^η COORS PORCELAIN COMPANY COLDEN. COLORADO Circle No. 47 A-1 on Readers' Service Carl, page 93 A
V O L U M E 28, N O . 8, A U G U S T
TYPE M accommodates twenty-seven 15-ml tubes. TYPE SP will hold six 75-ml tubes. TYPE S P / X can spin ten 50-ml tubes and five 15-ml tubes in one operation. All heads may be made more versatile by use of accessory adapters. Also, other types of angle centrifuges available. SERVALL sets trade standards.
1956
I v a n S o r v a l l , Inc. Ρ. Ο. BOX 230, NORWALK, CONNECTICUT Circle No. 47 A-2 on Readers' Service Card, page S3 A
47 A
