PYREX 500mL Class A Volumetric Flask with No. 19 Polyethylene Standard Taper Stopper

The PYREX 500mL 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. 19 high-density polyethylene (HDPE) standard taper stopper. Its Class A accuracy makes it suitable for analytical chemistry, pharmaceutical testing, quality control and laboratory research. Key Features - 500mL capacity for accurate laboratory solution preparation. - Class A volumetric accuracy with ±0.20mL tolerance. - Durable borosilicate glass construction. - No. 19 polyethylene standard taper stopper included. - HDPE stopper with a closed-bottom design. - Heavy-duty machine-blown glass body for improved durability. - Reinforced heavy-beaded neck. - 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 glassware for chemical, pharmaceutical and research laboratories. Specification Details Brand PYREX (Corning) Product Code 5642-500 Capacity 500mL Accuracy Class Class A Tolerance ±0.20mL Material Borosilicate Glass Flask Type Heavy-Duty Volumetric Flask Stopper Size No. 19 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 287mm Outer Diameter Approximately 100mm 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. 19