PYREX® Class A Volumetric Flask with Glass [ST] Stopper, Serialized/Certified, Corning 5680

These Corning PYREX® volumetric flasks with a glass standard taper stopper are calibrated to Class A tolerances in accordance with ASTM E-542 and E-288. Each volumetric flask is individually serialized and supplied with a certificate of identification and capacity, traceable to NIST standards. Supplied with a standard taper glass stopper. The graduation line is sharp and permanent, and large white block letters make the inscription easy to read.