Kimble 28019 KIMAX Class A Mixing Bulb Style Flasks with Standard Taper Stoppers have a mixing bulb in the neck, between the stopper and capacity ring. It contains approximately one tenth of the capacity of the body and is designed to aid in dissolving or mixing the contents of the flask. Calibrated to contain with a marking spot. Standard Taper ground glass stopper is supplied. Designed from ASTM Specification E288, Class A unserialized requirements. Replacement stopper is 850100.
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