Product Capsules 350° C. 111.
Parr Instrument Co., Moline, 57A
Stopcock Adapters. Cited as being strong and rugged with a functionally modern contour, company's new stop cock adapters can convert any glass stopcock into a pressure tight stopcock. The Emil Greiner Co., 20-26 N. Moore St., N. Y. 13, Ν. Υ. 5Α Sulfur Determinators. Catalog avail able. Describes the complete line of Dietert-Detroit carbon and sulfur determinators, accessories and supplies. Unit includes determinator, combustion furnace, analytical balance and weights, oxygen regulator, oxygen purifying train, boats, shields and combustion tube. Harry W. Dietert Co., 9330 Roselawn, Detroit 4, Mich. 59A-2 Tubing, Plastic. Tygon flexible plastic tubing is cited as being chemically inert, non-toxic, glass clear, tough, flexible, easy to couple. U. S. Stoneware, Akron 9, Ohio 56A Tubing, Plastic. Nalgon flexible plas tic tubing is cited as possessing neu trality, chemical resistance, safety,
dimensional stability, transparency, and resistance to age-yellowing. The Nalge Co., Inc., Rochester 2, Ν. Υ. 60Α-2
CHEMICALS AND MATERIALS Biological Grade Chemicals. Folder, "Chemicals for Biological Use," avail able. Contains complete specifications on biological grade sodium chloride, potassium chloride, and sodium bi carbonate. All are purified beyond ACS quality standards. General Chemical Div., Baker & Adamson Pdts., Allied Chemical & Dye Corp., 40 Rector St., N. Y. 6, Ν. Υ. 4th Cover
Isotope Chart. Information available on company's color coded wall chart of the isotopes. Size: 5 feet wide by 4 feet high. Color code tells quickly the type of nuclide and the half life value ranges of the artificially radioactive nuclide. Harshaw Scientific Div., Harshaw Chemical Co., Cleveland, Ohio 6A Laboratory Chemicals. Circle in dicated numbers for complete informa
tion on the following Merck laboratory chemicals: Skellysolve " B " (n-hexane), 13A-1; perchloric acid, 13A-2; methyl cellosolve, 13A-3; and phosphomolybdic acid, 13A-4. Merck & Co., Inc., Rah way, X. J. 13 A-1 to 4 Precious Metal Fabrication. Catalog available. Company fabricates labora tory apparatus, bimetals, electrodes, foil, precious metal catalysts, rhodium plat ing solutions, tubing and wire. J. Bishop & Co. Platinum Works, Malvern, Pa. 24A Reagent Acids. "Baker Analyzed" reagent acids carry the actual lot analysis on the label and the lot assay (both of which are defined to the deci mal). Bottles use color-matching of label and closure. J. T. Baker Chemi cal Co., Phillipsburg, N. J. 2nd Cover Solvents. Chemical Index available. Company's solvents in safety-packed one gallon containers are cited as being safer, more economical, uniform in size and quality assured. Bottle has safe pouring lip. Fisher Scientific Co., 711 Forbes St.. Pittsburgh 19, Pa. 36A
(2,aù>n6mefoée C H E M I C A L S Selected Reagents
Stand·
ardized for PARR Bombs and
Sodium Peroxide, calorific grade, for all peroxide bomb tests. Minimum assay, 96.0% Na2Û2. Negligible sulfur. Potassium Perchlorate, accelerator for peroxide bomb tests, dried and screened through 100 mesh. Negligible sulfur. Benzoic Acid, thermal value standard for oxygen bomb calorimeters. Also, addition agent for peroxide bomb tests. Comes in powder or pellet form.
PARR EST. 1899
·
Calorimeters
Barium Chloride, sized crystals, 20 to 30 mesh for rapid sulfur determinations with PARR Turbidimeter. Gelatin Capsules, for holding liquid samples in combustion bombs. Heat of combustion and sulfur content reported on label.
Order from your PARR Dealer or write to the factory for details and standard package prices.
INSTRUMENT CO., MOLINE, ILLINOIS MAKERS OF CALORIMETERS AND PRESSURE REACTION EQUIPMENT
For further information, circle numbers 51 A-1, 51 A-2, 51 A-3, 51 A-4, 51 A-5 on Readers' Service Card, page 53 A V O L U M E
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