PYREX® Class A Low Actinic Volumetric Flask with Glass [ST] Stopper, Serialized/Certified, Corning 55680

These Corning PYREX® Class A volumetric flasks with a glass standard taper stopper are made from red low actinic stained glass to provide protection for materials sensitive to light. The protective color is an integral part of the flask, which retains its mechanical strength, chemical stability, and thermal resistance. The graduation line is sharp and permanent and large white block letters make the inscription easy to read. This Class A volumetric flask has been calibrated to Class A tolerances in accordance with ASTM E-542 and E-288. Each flask is individually serialized and supplied with a certificate of identification and capacity, traceable to NIST standards. Supplied with a standard taper red low actinic glass stopper.