PYREX 2000mL Class A Volumetric Flask with No. 27 PTFE Standard Taper Stopper

The PYREX 2000mL Class A Volumetric Flask with PTFE Stopper is precision laboratory glassware designed for accurate solution preparation, dilution and volumetric measurements. It features a heavy-duty machine-blown glass body, reinforced long neck, permanent graduation line and No. 27 color-coded PTFE keyhole stopper. Its Class A accuracy makes it suitable for analytical chemistry, pharmaceutical testing, quality control and laboratory research. Key Features - 2000mL (2 Litres) capacity for precise laboratory solution preparation. - Class A volumetric accuracy with ±0.50mL tolerance. - Durable PYREX laboratory glass construction. - No. 27 PTFE standard taper stopper included. - Color-coded keyhole stopper for convenient handling and identification. - Chemically resistant polytetrafluoroethylene (PTFE) stopper. - Heavy-duty machine-blown glass body. - Reinforced heavy-beaded neck for improved durability. - Sharp permanent graduation line for accurate volume measurements. - Large white markings for easy reading. - Flat-bottom design for stable laboratory placement. - Long narrow neck for controlled filling to the calibration mark. - Reusable for analytical chemistry, pharmaceutical and research applications. Specification Details Brand PYREX (Corning) Product Code 5644-2L Capacity 2000mL (2 Litres) Accuracy Class Class A Tolerance ±0.50mL Material PYREX Laboratory Glass Flask Type Heavy-Duty Volumetric Flask Stopper Size No. 27 Stopper Type PTFE Standard Taper Stopper Material Polytetrafluoroethylene (PTFE) Stopper Design Color-Coded Keyhole Flask Shape Flat Bottom Neck Style Long Reinforced Neck Height Approximately 357mm Outer Diameter Approximately 158mm Applicable Standards ASTM E694, ASTM E542 and ASTM E288 Graduation Permanent Single Calibration Line Reusable Yes Quantity per Pack 1 Flask Quantity per Case 4 Flasks Replacement Stopper PYREX Series 7630 No. 27