PYREX 250mL Class A Volumetric Flask with No. 16 Polyethylene Standard Taper Stopper

The PYREX 250mL Class A Volumetric Flask with Polyethylene Standard Taper Stopper is precision laboratory glassware designed for accurate solution preparation, dilution and volumetric measurements. Manufactured from durable borosilicate glass, it features a heavy-duty machine-blown body, reinforced long neck, permanent graduation line and No. 16 high-density polyethylene (HDPE) standard taper stopper. Its Class A accuracy makes it suitable for analytical chemistry, pharmaceutical testing, laboratory research and quality control applications. Key Features - 250mL capacity for accurate laboratory solution preparation. - Class A volumetric accuracy with ±0.12mL tolerance. - Durable borosilicate glass construction. - No. 16 polyethylene standard taper stopper included. - Chemical-resistant HDPE stopper with closed-bottom design. - Heavy-duty machine-blown glass body with reinforced neck. - Sharp permanent graduation line for accurate volumetric measurements. - Large white markings for easy identification. - Flat-bottom construction for stable laboratory placement. - Long narrow neck for controlled filling to the calibration mark. - Reusable laboratory glassware for routine applications. - Suitable for pharmaceutical, chemical, educational and research laboratories. Specification Details Brand PYREX (Corning) Product Code 5642-250 Capacity 250mL Accuracy Class Class A Tolerance ±0.12mL Material Borosilicate Glass Flask Type Heavy-Duty Volumetric Flask Stopper Size No. 16 Stopper Type Polyethylene Standard Taper Stopper Material High-Density Polyethylene (HDPE) Stopper Design Closed Bottom Flask Shape Flat Bottom Neck Style Long Reinforced Neck Height Approximately 252mm Outer Diameter Approximately 78mm Applicable Standards ASTM E694, ASTM E542 and ASTM E288 Graduation Permanent Single Calibration Line Reusable Yes Quantity per Pack 6 Flasks Quantity per Case 12 Flasks Replacement Stopper PYREX Series 7624 No. 16