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VITREOSIL* (Vitreous Silica) laboratory ware is a superior replacement for porcelain and glass and a satis factory substitute for platinum in many cases. Greater chemical purity and high resistance to heat shock as compared to other ceramics and low initial cost compared to platinum have led to the universal adoption of VITREOSIL as a substitute for platinum, porcelain and other materials in many analytical and research procedures. Standard items of VITREOSIL Laboratory Ware include transparent, glazed and unglazed crucibles, evaporating dishes, beakers, tubing, etc. Large stock enables prompt shipment Wrife for Technical Bulletins giving full descriptions, specifications, and prices.
THE THERMAL SYNDICATE, LTD. 14 BIXLEY HEATH
LYNBROOK, Ν . Υ.
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{^ MICRO OXYGEN BOMB The 50 ml. No. 1103 micro oxygen b o m b is a recent a d d i t i o n t o t h e family of Parr oxygen bombs recommended for the determination of sulfur, chlorine and other elements in small samples weighing from 50 to 400 milligrams.(*) The bomb is selfsealing, made from corrosion resistant alloys and requires no liner. Oxygen is admitted and residual gases released through a single manually operated needle valve. The relative size of the 1103 micro bomb is shown at E. *Anal. Chem., 23,1008-11 &23,1011-13 (1951)
PARR EST. 1899
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Other Parr oxygen bombs include: A . No. 1101, double valve, self sealing, 360 ml. B. No. I 102, single valve, self sealing, 360 ml. C. No. 1002, double valve, manually sealed, 380 ml. D. No. 1104, double valve, manually sealed, 240 ml., high pressure type. Ask your Parr dealer, or write to the factory for details concerning any of the Parr oxygen
INSTRUMENT CO., MOLINE. ILLINOIS MAKERS OF CALORIMETERS AND PRESSURE REACTION EQUIPMENT
bombs.
