Kimble 28014 KIMAX Class A Volumetric Flasks with Glass Pennyhead Stoppers with a single graduation ring blasted on the neck, calibrated to contain. A standard taper ground glass stopper is supplied with each flask. A marking spot is on sizes 10mL and larger. Sizes 5mL and larger are designed from ASTM Specification E288, Class A unserialized requirements. The 1 and 2mL sizes are test tube shaped and are calibrated to E237 tolerances. Replacement stopper is 850100.
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