These KIMAX® flasks are permanently marked with an individual serial number and are supplied with a Certificate of Graduation Accuracy

Designed from ASTM Specification E288, Class A serialized requirements. Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.

Pipet access is easy with these wide-mouth volumetric flasks. Heavy, uniform walls provide superior strength, durability and safety. Large, permanent, easy-to-read markings allow for quick identification. Graduated to Class A volumetric tolerances with graduation ring blasted on the neck. Calibrated "to contain." Flasks feature flat interior bottoms for stirring with standard stir bars. Supplied with a marking spot and standard taper glass stopper.