PYREX® Lifetime Red™ Class A Volumetric Flask with PE Snap-Cap, Corning 5600

These Corning Class A PYREX® Lifetime Red™ volumetric flasks have the capacity mark etched as a fine line through a narrow red band into clear glass - making a filler unnecessary and giving high legibility - accuracy and permanence. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for standard Corning polyethylene snap-caps. These Class A volumetric flasks have been manufactured to Class A tolerances as established by ASTM E-694 for volumetric ware - ASTM E-542 for calibration of volumetric ware and ASTM E-288 for volumetric flasks. Material: borosilicate glass code 7740.