PYREX 10mL Class A Volumetric Flask with No. 9 PTFE Standard Taper Stopper

The PYREX 10mL Class A Volumetric Flask with PTFE Stopper is precision laboratory glassware designed for accurate measurement, solution preparation and dilution. Manufactured from durable borosilicate glass, it features a heavy-duty machine-blown body, reinforced long neck, permanent graduation line and No. 9 color-coded PTFE keyhole stopper. Its Class A accuracy makes it suitable for analytical chemistry, pharmaceutical testing, quality control and laboratory research. Key Features - 10mL capacity for precise small-volume solution preparation. - Class A accuracy with ±0.02mL tolerance. - Durable borosilicate glass construction. - No. 9 PTFE standard taper stopper included. - Color-coded keyhole stopper for easy handling and identification. - Chemically resistant PTFE stopper material. - 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 laboratory research and analytical applications. Specification Details Brand PYREX (Corning) Product Code 5644-10 Capacity 10mL Accuracy Class Class A Tolerance ±0.02mL Material Borosilicate Glass Flask Type Heavy-Duty Volumetric Flask Stopper Size No. 9 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 99mm Outer Diameter Approximately 28mm Applicable Standards ASTM E694, ASTM E542 and ASTM E288 Graduation Permanent Single Calibration Line Reusable Yes Quantity per Pack 12 Flasks Quantity per Case 12 Flasks Replacement Stopper PYREX Series 7630 No. 9