PYREX 50mL Class A Volumetric Flask with No. 9 Polyethylene Standard Taper Stopper

The PYREX 50mL 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 PYREX glass, it features a heavy-duty machine-blown body, reinforced long neck, permanent graduation line and No. 9 high-density polyethylene (HDPE) stopper. Its Class A accuracy makes it suitable for analytical chemistry, pharmaceutical testing, quality control and laboratory research. Key Features - 50mL capacity for precise laboratory solution preparation. - Class A volumetric accuracy with ±0.05mL tolerance. - Durable PYREX laboratory glass construction. - No. 9 polyethylene standard taper stopper included. - Chemical-resistant HDPE stopper with closed-bottom design. - Heavy-duty machine-blown glass body. - Reinforced neck for improved durability. - Sharp permanent graduation line for accurate volume 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 pharmaceutical, chemical and research laboratories. Specification Details Brand PYREX (Corning) Product Code 5642-50 Capacity 50mL Accuracy Class Class A Tolerance ±0.05mL Material PYREX Laboratory Glass Flask Type Heavy-Duty Volumetric Flask Stopper Size No. 9 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 151mm Outer Diameter Approximately 51mm 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. 9