Product Capsules straight glass stopcock, a three-way stopcock for filling, or an automaticzero with three-way stopcock. Fischer & Porter Co., Glass Products Div., 1627 County Line Kd., Hatboro, Pa. 27A Cabinets, Chromatography. Litera ture available on "The Chromatocab," a stainless steel lined cabinet for two dimensional chromatograms. Lrhit fea tures constant temperature, convenience and versatility. Research Specialties Co., 2005 Hopkins St., Berkeley 7. Calif. 34A-2
Cabinets, Chromatography. Circle 84A for descriptive bulletin on chro matography cabinet for preparing twodimensional paper chromatograms by descending or ascending techniques. Vapor-tight hinged cover. White formica inside and out. Inside dimen sions: 25 3 / 4 " long X 19VY' wide X 2 7 1 / / deep. Arthur H. Thomas Co., Vine St. at 3rd., Philadelphia 5, Pa, 84A
Centrifuges. Circle 8A for the world's largest capacity centrifuge (90,000 Gals.) applicable to washing, clarifying, neutralizing, de-colorizing, acid treat ing, chemical reacting, and solvent
extractions requiring 1 to 15 countercurrent stages. Podbielniak, Inc., 341 E. Ohio St., Chicago 11, 111. 8A
heads. Capacity: from 4 liters down to 7 ml. International Equipment Co., 1284 Soldiers Field Rd., Boston -35, Mass. 56A
Centrifuges. The HT high speed cen trifuge provides speeds up to 17,000 r.p.m. with forces to 34,390 X G and is designed for safe operation. The CM centrifuge features adaptability at moderate price and accommodates 23 heads and accessories. Literature avail able. Harshaw Scientific Co., 1945 E. 97th St., Cleveland 6, Ohio. 20A
Centrifuges. Bulletin available on superspeed refrigerated centrifuge for continuous and batch operations. 16,000 r.p.m. 32,700 X G . Temper atures of —0° C. may be held within ± 1 ° C. Maximum capacity: 1,770 ml. Ivan Sorvall, Inc., Norwalk, Conn.
Centrifuges. Bulletin available on new high speed angle centrifuge with full instrumentation. Enclosed table model with speeds up to 17,000 r.p.m. forces up to 34,390 X G. 21" high, 14" wide, 17" deep. Completely sealed 8 X 50 ml. head. Scientific Products, Div. of American Hospital Supply Corp., 2020 Ridge Ave., Evanston, 111.
Chromatographs. Circle43A for data file on the Beckman GC-2 gas chromatograph that analyzes gases and liquids with boiling points up to 350° C. Gas sample reproducibility up to ± 0 . 1 % , liquid sample reproducibility ± 0 . 5 % to ± 0 . 1 % . Scientific Instru ments Div., Beckman Instruments, 2500 Fullerton Road, Fullerton, Calif.
41A
Centrifuges. Bulletin available on refrigerated centrifuge featuring 23 interchangeable heads, including a new shaker head attachment for shaking under controlled temperatures, 16 direct-drive angle heads, 7 direct-drive horizontal heads, 4 high-speed angle
62 A-1
43A
Chromatographs. 8-page bulletin on the "Partitioner" (for gas-liquid partition chromatography) used for analytical control of petroleum products, gas and liquid fuels, plant effluent gases, com(Continued on page 79 A)
Measures water content better than 1 part per
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Useful
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MODEL W ELECTROLYTIC
MOISTURE ANALYZER
Applications:
» Analyzing " F r e o n " a n d Sulfur Dioxide refrigerants. * Continuous or b a t c h analyses of moisture in a wide variety of gas streams — including process streams, inert atmospheres required in plant processes and laboratory dry boxes, a n d plant instrument streams. » Measuring reaction rates w h e r e w a t e r is involved as a reactant, product or catalyst. Available in explosion-proof and non-explosion-proof constructions Write
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for complete
information
. MANUFACTURERS ENGINEERING & lu£L· EQUIPMENT CORP. 10 Sunset Lane
·
Hatboro, Pa.
Circle No. 78 A-1 on Readers' Service Card, page 73 A 78 A
·
ANALYTICAL CHEMISTRY
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The Cambridge Research Model pH Meter measures pH and millivolt values where extreme precision and reliability are required. Although originally designed for biological and physiological use, the instrument is particularly useful in the Chemical, Pharmaceutical and Process Industries. The combination of features is not to be found in any other similar instrument. CAMBRIDGE INSTRUMENT C O M P A N Y , I N C . 3540 Grand Central Terminal, New York 17, Ν. Υ.
PIONEER MANUFACTURERS OF PRECISION INSTRUMENTS Circle No. 78 A 2 on Readers' Service Card, page 73 A
