NEW PRODUCTS
Torsion Balance
NEW
The newly introduced Torbal PL-1 optical projection balance has a capac ity of 1000 g. and an accuracy of 0.1 g. The optical range is 110 g. and readings to 0.1 g. are made using a vernier. The Torsion Balance Co., Clifton, N. J. 404
CATALOC
VITREOSIL PURE FUSED
QUARTZ LABORATORY WARE INDUSTRIAL WARE TUBING AND ROD SPECIAL APPARATUS IF YOU DON'T HAVE THIS NEW 30 PAGER, WHICH INCLUDES THE UNUSUAL PHYSICAL PROPERTIES OF VITREOSIL, WRITE T O D A Y , I T ' S FREE. THERMAL AMERICAN FUSED QUARTZ CO. RT. 202 & CHANGE BRIDGE RD. MONTVILLE, NEW JERSEY
Circle No. 4 on Readers' Service Cord 124 A
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ANALYTICAL CHEMISTRY
Solid sampler for chromatographers features a retractable sample tongue within a septum penetrating needle. Two methods of sampling are possi ble, depending on whether the solids are carried in a solvent. Hamilton Co., Inc., P. O. Box 3 0 7 , Dept. 5b, Whittier, Calif. 405 G a s Liquid C h r o m a t o g r a p h
A new dual column gas chromato graph, Model A-110-D, has two six-foot coiled glass columns mounted in the column oven. One column is wound inside the other; they may be operated separately or in series. The unit oper ates with a radium, strontium, or hy drogen flame detector, or with electron capture detection devices. The instru ment can be used isothermally or with temperature programming. Manual or automatic collection systems are avail able. Glowall Corp., Glenside, Pa. 406
J-M CHROMOSORB DEALERS Ace Scientific Supply Co., Linden, N. J. A. S. Aloe Co., St. Louis, Mo. Aloe Scientific Co., Kansas City, Mo. Amend Drug & Chemical Co., Inc., New York, N.Y. Analytical Engineering Laboratories, Inc., Hamden, Conn. Applied Science Laboratories, State College, Pa. Beckman Instruments Co., Fullerton, Calif. Braun Chemical Co., Los Angeles, Calif. Braun-Knecht-Heimann, San Francisco, Calif. Burrell Corp., Pittsburgh, Pa. Central Scientific Co., Chicago, Illinois Chemical Research Services Inc., Addison, III. Chron-Line Laboratories, Kansas City, Mo. Consolidated Electrodynamics, Pasadena, Calif. W. H. Curtin Co., Houston, Texas Curtis & French, Inc., Indianapolis, Ind. Distanal, Inc., Baton Rouge, La. Eberbach & Sons, Co., Ann Arbor, Michigan F& M Scientific Corp., Avondale, Pa. Fisher Scientific Co., All offices General Laboratory Supply Co., Paterson, N. J. Green Briar Instrument Co., Ronceverte, W. Va. Emil Greiner, New York, Ν. Υ. Harshaw Chemical Co., All offices Jarrell-Ash Co., Newtonville, Mass. Lachat Chemicals, Inc., Chicago, III. LaPine Scientific Co., Berkeley, Calif. LaPine Scientific Co., Chicago, III. LaPine Scientific Co. of N.Y., Irvington-on-Hudson Loe Engineering Co., Altadena, Calif. Mann Research Laboratories, Inc., . New York 6, Ν. Υ. Nester & Faust, Newar, Delaware Perkin-Elmer Corp., Norwalk, Conn. Phipps & Bird, Inc., Richmond, Va. Pinder Instrument, Hammond, Indiana Podbleiniak, Inc., Chicago, III. Precision Scientific Co., Chicago 47, III. B. Preiser Co. Inc., Charleston, W. Va. Research Specialties Co., Richmond, California Ε. Η. Sargent Co., All offices Scientific Glass Apparatus Co., Bloomfield, N. J. Scientific Products, South San Francisco, Calif. Scientific Supplies Co., Seattle, Wash. Shamrock Specialties Co., Texas City, Texas Arthur H. Thomas Co., Philadelphia, Pa. George T. Walker Co., Minneapolis, Minn. Wilkins Inst. & Res. Co., Berkeley, Calif., Walnut Creek, Calif.
I N CANADA Canadian Johns-Manville Co., Ltd., Montreal, P.Q. Port Credit (Toronto), Ontario Harrison and Crosfield (Canada) Ltd., Winnipeg, Manitoba, Other Principal Cities
AVAILABLE IN EUROPE FROM THESE J-M REPRESENTATIVES Johns-Manville Co., Ltd., London S.E. 1, England Johns-Manville de France, Neuilly-sur-Seine, France Johns-Manville (Overseas) Ltd., Milano, Italy Vulcasot Geutner & Co., Vienna, Austria Lehman & Voss & Co., Hamburg, Germany Profiltra N. V., Amsterdam, Holland Schneider & Co., Winterthur, Switzerland Productos Auxilliares de la Industrie, Valencia, Spain Max Sievert AB,Stockholm—Bromma, Sweden Prothermac S.A., Brussels, Belgium A. Tossebro & Co., Aalsund, Norway Cable: Johnmanvil JOHNS-MANVILLE
JOHNS-MANVILLE
PRODUCTS
