new concept in solid support material . . .
GAS-PACΚ F The finest support available for the qualitative and quantitative analyses of polar materials. a homogeneous combination of diatomaceous earth and perfluorocarbon polymer - to bring out the best properties of each in a general support of wide applicabilty. •
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COLUMN PACKINGS ruRnMrv;nRR PACKED COLUMNS STATIONARY PHASES ^KUMUbUKb SQL|D ABSORBENTS Write for complete Catalog of Materials for Gas Chromatography
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Circle No. 156 on Readers' Service Card
Electrothermal
ARMOURED HEATERS Meets the need for an electric heating cable to operate under more severe conditions than tapes and for use at temperatures of 8 0 0 ° C. Supplied in standard dimensions shown and in lengths to suit individual require ments. For operation on power supply from 12 to 250 V o l t s , A . C . or D.C.
Cat. No. Temp. Length Diam A65110 ° C Feet Ins.
S u c c e s s f u l l y Applied to METAL PIPES — CATALYST TUBES METAL REACTION VESSELS, ETC. The Electrothermal A r m o u r e d Heater is con structed of a mineral core and insulated accord ing to temperature range. Resistance alloy is moulded in wire form beneath insulation covering and then enclosed in a braided nickel alloy sheath. N i c k e l alloy input terminals insulated with ceramic for trouble-free opera tion at maximum temperature. Braiding com bines flexibility with excellent mechanical strength, to withstand handling and abrasion without injuring the heating element. Ideal where a high rate of heat transfer is required. M a y b e applied directly to metal vessels or pipes and may b e lagged or close-coiled,
WE'LL BE GLAD TO SEE YOU AT OUR BOOTH #306 AT THE ACS SHOW
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A84850 A84851 A84852
Pyrometer 0-1200° C-2192° F Thermocouple Compensating lead 48 in. (122 cm.)
$69.50 11.55 11.55
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NEWS 3:45 Factors Influencing the Electrophoretic Migration of Lactic Dehygrogenaseisozymes. N . Ressler, J. L. Schultz, and R. R. Joseph, Dept. of Medicine, Wayne County General Hospital, Eloise, Mich. 4:05 Identification of Some Serum Proteins Responding to Injury in the Rat. Otto W. Neuhaus, M.D., Wayne State University, College of Medicine, Detroit, Mich. 4:25 Constant Current Potentiometric Titration of Ascorbic Acid. Calvin O. Huber and Heinz E. Staplefeldt, Uni versity of Wisconsin, Milwaukee, Wis. W e d n e s d a y A f t e r n o o n , October 23 ANALYTICAL
CHEMISTRY—GENERAL
Rodney F. Quentin, Wyandotte Corporation, Presiding
Chemicals
1:45 Comparative Studies on the Crit ical Solution Temperatures of Ali phatic Compounds. H. H. 0 . Schmid, H. K. Mangold, and W. 0 . Lundberg, University of Minnesota, The Hormel Institute, Austin, Minn. 2:15 Gravimetric Determination of Rubidium and Cesium with Ν,Ν-Ώίmethylethanolammonium Orotate. Nazhat Z. Babbie and W. Wagner, Dept. of Chemistry, University of De troit, Detroit, Mich. 2:35 Analytical Studies of CationicSensitive Glass Electrodes. Garry A. Rechnitz, Dept. of Chemistry, Univer sity of Pennsylvania, Philadelphia, Pa. 3:30 Application of Stripping Analy sis to the Determination of Silver-Us ing Graphite Electrodes. S. P. Perone, Dept. of Chemistry, Purdue University, Lafayette, Ind. 3:50 Galvanic Monitoring of Nitrogen Dioxide and Nitric Oxide. P. Hersch and R. Deuringer, Beckman Instru ments, Inc., Fullerton, Calif. 4:10 Automated Dumas Instrumenta tion for Industrial Nitrogen and P r o tein Analysis. Don Papievis and Lew Malter, Coleman Instruments, Inc., Maywood, 111. 4:30 A New Ultraviolet-Visible Spec trophotometer, Human-Engineered for the Modern Laboratory. Adrian Chisholm, J. J. J. Staunton, and Lew Malter, Coleman Instruments, Inc., Mavwood, 111.
Third International Congress of Polarography T h e Polarographic Society will be holding a six-day congress from J u l y 19 to 25, 1964, at S o u t h a m p t o n Uni versity. T h e congress will be con cerned with all aspects of polarography and will be open to members and nonmembers of t h e Society. Professor I . M . Kolthoff is to be President of t h e Congress, and the Society's 1964 med allist. F u r t h e r information is avail able by writing to Orgaiiiziiig Secre tary, D r . D . A. P a n t o n y , D e p t . of Metallurgy, Royal School of Mines, Prince Consort Rd., London, S. W . 7, England.
