compact arc Jamps, and hydrogen arcs, are now associated with Engelhard Industries. Erb & Gray Scientific, Inc. 854 So. Figueroa St. Los Angeles 17, Calif.
Manufactures microscopes and distributes wide range of laboratory supplies equipment. Erskine-Healy, Inc. Rubber Products Div. 4 2 0 St. Paul St. Rochester 5, Ν . Υ.
Complete line of Neoprene research gloves for dry boxes. Gloves are made in a variety of sizes and dimensions in 10 to 30 gage. For chemical, biological, bacteriological, and atomic research and assembly of transistors and other small electronic devices.
F&M Scientific Corporation 1001 Kendall Rd. Wilmington 5, Del.
Farrand Optical Co., Inc. Bronx Blvd. & East 238th St. New York 7 0 , N . Y .
Develops, designs, manufactures, and sells a complete line of gas chromatographs for programmed or isothermal temperature op eration, high temperature analysis, trace analysis, and large-scale separations. Dis tributes d.-c. amplifiers, recorders, integra tors (from Leeds & Northrup, Minne apolis-Honeywell, Bristol, Barber-Colman, and Weston) and microliter syringes, fraction collectors, and admission probes (from Hamilton), Provides an analytical research laboratory for gas chromatographic analysis procedures and an analytical service labora tory for quantitative analysis by ^a? chro matography.
Research, development, design, and pro duction of precision optics and electronic and scientific instruments, including electrostatic electron microscopes, ultraviolet, visible, and infrared spectrometers, fluorometers, etc. Fischer & Porter Co. 24 Warminster Rd. Hatboro, Pa.
Manufactures a complete line of industrial control instrumentation for measuring, re cording, and controlling process variables. Centralized control panels, data-handling systems, chlorinators, and industrial glass products permit a complete control "pack age" from measurement to product control. Fisher Scientific Co. 711 Forbes A v e . Pittsburgh 19, Pa.
Developer, 'manufacturer, and distributor of instruments, apparatus, furniture, and chemicals for all laboratory needs. Service laboratories are maintained in all Fisher plants where trained technicians service, re pair, and recalibrate fine instruments. Fish-Schurman Corp. 7 0 Portman Rd. New Rochelle, Ν . Υ.
Hoeppler and Ubbelohde viscometers, Royal Berlin porcelain filtering • crucibles, filtering tubes, ball mills, etc. Also x-ray lead glass, radiation shielding glass, and non-browning glass. U.S. agents for Jena Glass, Schott & Gem. optical, technical, and laboratory glassware used in analytical chemistry. Floridin Co. P. O . Box 9 8 9 Tallahassee, Fia.
7 of the 912 NEW PYREX® lab items . . . 4 to save you time; 3 to cut costs 3 0 2 5 SHIELDED CYLINDER. New, twopiece outfit eliminates breakage in carry ing samples from plant or storage tanks to lab. Flat-bottomed PYREX brand 1000 ml glass cylinder is held in tightly by " O " ring friction fit. Metal shield has "lookthrough" panels cut out, carrying handle, and extended collar. Shield is coated with epoxy-base material that is acid resistant. 2 2 1 0 OPTICAL CELL. Improved design incorporates high-purity fused silica win dows fused into a VYCOR brand glass body. Light path is 10 mm, guaranteed transmittance a minimum of 7 3 % at 200 ran. All cells are matched for transmission and lettered for orientation. Comes com plete with interchangeable f stopper. 2 1 2 2 LOW-COST PYREX ACCU-RED BURETTES. Priced at 38% less than Class A Ware, these are accurate enough for many tasks. For example tolerance is ±0.06 ml for the 25 ml size. ACCU-RED markings are part of the glass and, there fore, permanent. 10, 25, 50, 100 ml sizes. 9650 CANNON-FENSKE VISCOSIMETER. For accurate determination of kine matic viscosity of oils, precision bore capillary tubing has a tapered entrance to prevent turbulence. Bridge is of heavy rod. In 11 sizes from No. 25 to No. 600. P Y R EX® laboratory w a r e
8 0 7 0 CENTRIFUGE TUBES. Low-priced, these tubes are precision made with uni form walls and conical beaded rim. En graved white filled enamel markings, easy to read, placed at major intervals only. Three sizes, 5, 10, and 15 ml. 5750 DILUTION FLASKS. These Class A capacity flasks help you prepare solutions for toxicity tests quickly and accurately. Made of rugged and chemically inert PYREX brand glass No. 7740, they have f" stopper and stable hex base. 10 sizes, 10 through 100 ml. 7098 PYREX MICRO-LITER PIPETTES. Big, bold, block size markings help you quickly identify size you need. Long tip makes it easy to get at contents of a flask. Safety bulb prevents too rapid a rise of liquids. These pipettes are accurate and have a very fine line to indicate volume. 18 sizes, from 1 to 500 micro-liters. These are among the 912 new PYREX brand glassware products now listed in Supplement No. 3 to our full-line catalog, LG-1. You can get full details on quan tity discounts—and delivery—from your usual source of supply. Or, send for LG-1 and/or Supplement No. 3. Write to us at 720 Crystal Street, Corning, New York. C O R N I N G GLASS WORKS CORNING MEANS RESEARCH IN GLASS
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Manufactures adsorbents and desiccants. Florex fuller's earth. Florite activated bauxite, and Florisil synthetic gel avail able in a variety of mesh sizes. Florisil widely used in chromatography. Forro Scientific Co. * 833 Lincoln St. Evansfon, 111.
Manufactures a complete line of one- and two-dimensional radiochromatographs, flow counter probes, multiple flow counters, coincidence isotope analyzers, count rate meters and scalers. Franklin Electronics Inc. East Fourth St. Bridgeport, Pa.
Manufactures nuclear test equipment for laboratory and process use. Also manufac tures digital voltmeters, ohmmetere, ;,*and multimeters. George W . Gates & Co., Inc.
P. O. Box 216 Franklin Square, L. Ι., Ν . Υ.
Manufacturers and dealers of lighting equipment incorporating special light sources of mercury, sodium, zirconium concentrated arcs, photochemical or "Uviarcs," mercury point sources, blacklight, germicidal, fluores cent and special filament. General Electric Co. X-Ray Department 4 8 5 5 Electric A v e . Milwaukee 1 , Wis.
Offers a complete x-ray diffraction pro gram, including equipment for film, direct measurement, and fluorescence analysis. This program features continuing develop ment of new equipment and instruction in
