Heavy-walled flasks with side tubulation are designed to take one atmosphere of vacuum or 29 in. of mercury. Sizes 25 through 500 ml have a side hose connection designed to accept 5/16 in. ID flexible tubing. Sizes 1000 ml and larger accept 3/8 in. ID tubing. Designed from ASTM Specification E1406, Type II, Class 1 requirements.
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Colonial Scientific has teamed up with the industry leaders, Fisher Scientific and VWR, and now offers their entire product line. Colonial Scientific provides any part from the Fisher Scientific site with a part number.