These KIMAX Class A flasks are permanently marked with individual serial numbers. The 500 mL size is suitable for determination of specific gravity of fine aggregate (ASTM C128).
Supplied with a Certificate of Graduation Accuracy Graduation ring is blasted on the neck Letters “TC” on the flask indicate to contain Supplied with a polyethylene snap cap and a marking spot Flasks have been carefully selected to meet the requirements for accuracy, appearance, glass quality, calibration line, and inscriptions of former NBS Circular 602 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