PYREX® Class A Micro Volumetric Flask with Glass [ST] Stopper, Serialized/Certified, Corning 5631

These Corning PYREX® Class A microvolumetric flasks with a glass standard taper PYREX® stopper are calibrated to Class A tolerances and individually serialized and supplied with a certificate of identification and capacity. It is designed for microchemical work. A hexagonal base has been added to improve the stability of this small flask. The graduation line is sharp and permanent, with white markings that are easy to read. Reference: ASTM E-237. Reusable. Material: Borosilicate Glass Code 7740