MANUFACTURERS' LITERATURE
MANUFACTURERS' LITERATURE Pressure Recorders. Line of pressure instruments for direct measurement, remote transmission, and automatic control covered in 24-page bulletin. The Foxboro Co. (Bull. 6-10). 16 Electrophoresis Apparatus. Descrip tion and specifications of instrumen tation for paper electrophoresis system for standardized operating procedures covered in 4-page folder. Specialized Instruments Corp. (Form 4R-554). 17 Stirrers. Bulletin presents information of new model of laboratory stirrer in corporating hollow spindle and worm gear reduction drive and operating at 100 to 1000 r.p.m. Eberbach Corp. (Power-Stir). 18 Glacial Methacrylic Acid. Bulletin of 14 pages presents information on properties of glacial methacrylic acid, polymerization and copolymerization with various materials, chemical re actions, and applications. Bohm & Haas Co. (Bull. SP-88). 19 Infrared
Spectrometer.
Six-page
folder lists specifications and discusses performance and operating features of single-beam, double-pass, recording infrared spectrometer. The PerkinElmer Corp. (Model 112). 20 Microscopes. Booklet of 28 pages dis cusses construction features of micro scopes and presents information to guide in selection of laboratory microscopes and accessories furnished by Bausch & Lomb Optical Co. (Booklet D-185). 21 Metallographs. Folder of 6 pages de scribes design features of equipment for microscopic investigations in metal lurgical research. Wiliam J. Hacker & Co., Inc. (Model MeF). 22 Glass Tubing. Available sizes of pre cision bore tubing and precision bore capillary tubing with i.d. or o.d. toler ances of ±0.0002 in. listed in 4-page folder. Wilmad Glass Co. (Bull. 100). 23 Flash Point Testers. Bulletin of 4 pages describes closed cup, PenskyMartens, and Cleveland flash testers suitable for ASTM and Federal speci fication tests. Labline, Inc. (Bull. 4070). 24
Temperature Measurement. Pam phlet of 8 pages discusses general meth ods of temperature indication, including by changes in color or physical state in temperature indicating paints, crayons, liquids, and pellets. Tempil° Corp. 2 5 Thermocouple and Extension Wire. Four-page bulletin covers line of thermo couple wire and extension wire, listing sizes, metals, insulations, prices, and application data for various types. Claud S. Gordon Co. (Form 1200). 2 6 Fine Wire. Bare drawn, Wollaston, Taylor process, extruded resistance, and potentiometer wires described in 4-page folder, as well as metallic ribbon and thin foil. Baker & Co., Inc. 17 Organic Chemicals Analysis. Leaf let of 4 pages lists prices of organic chemical analyses and physical tests per formed by Crippen & Erlich Labora tories, Inc. (Bull. 9). 28 Plastic Boxes. Catalog lists various types and sizes of polystyrene boxes that can be used as specimen containers or For further information, see coupon on page 57 A
Palointroduces NEW THIN-WALL KEARAL SINTERED ALUMINA
LABORATORY CRUCIBLES that offer unique resistance to REDUCING AGENTS · CONTAMINATION · THERMAL SHOCK PROPERTIES: Purity: 99.5%, + Porosity: 2% or less (by volume) Closed Pores Hardness: 9-Moh's. Scale-equivalent to sapphire Heat Conductivity: 0.017 9 cal/cm/ 0 C/sec Specific Heat: 0.26 cal/oc Specific Resistance: 101S ohm X cm Melting Point: 2050° C
Almost all metals and their alloys can be melted in these Kearal crucibles without contamination of the melt by the crucible. Made of alumina, one of the most chemically stable materials, by a new process which permits its fabrication in thin sections, it assures high re sistance to thermal shock. Examples of stability: Carbon and hydrocarbons will not reduce the crucible material at temperatures as high as 1700° C. Under the influence of hydrogen, no reaction with the crucible is observed at temperatures close to the melting point of alumina (2050° C ) .
PALO Formerly Palo-Myers, Inc.
Write for further
information
and
prices:
LABORATORY SUPPLIES, Inc. 81 Reade Street · New York 7, Ν. Υ.
For farther information, circle number 66 A on Readers' Service Card, page 57 A
66A
ANALYTICAL
CHEMISTRY
