26 A
ANALYTICAL
CHEMISTRY
Stirrer Type
Parr P R E S S U R E
APPARATUS These versatile and easy-to-handle PARR bombs eliminate the need for heavier types of pilot plant e q u i p m e n t in p e r f o r m i n g n u m e r o u s l a b o r a t o r y pressure reactions. The Series 4500 Stirrer Type apparatus is recommended especially for alkylation, ammonolysis, hydrogénation, polymerization, sulfonation and other reactions requiring a stirred autoclave for work at pressures and temperatures from atmospheric to 1000 psig. at 350° C.
mjgm-
Offered with either 1000 ml. or 2000 ml. Type 316 stainless steel bombs, or with bombs made from other alloys on special order. 1000 ml. bomb shown has 4 " I.D. cylinder, 5.38" deep. 2000 ml. size is the same but with cylinder 10.5" deep. Both are interchangeable in same 1500 watt electric heater. Bombs can be opened or closed easily without disturbing head fittings.
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PABR-
Ask your PARR Spec. 4500.
PARR INSTRUMENT EST. 1899
·
CO.,
dealer for details,
or write
for
MOLINE, ILLINOIS
MAKERS OF CALORIMETERS AND PRESSURE REACTION EQUIPMENT
EXW31M
Ulltfl*
1
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VITREOSIL* (Vitreous Silica) laboratory ware is a superior replacement for porcelain and glass and a satisfactory 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 Write
for Technical Bulletins giving full specifications; and prices.
descriptions,
THE THERMAL SYNDICATE, LTD. 14 BIXLEY HEATH
LYNBROOK, Ν . Υ.
