PYREX 1000mL Economy Class B Volumetric Flask with No. 22 Standard Taper Glass Stopper

The PYREX 1000mL Economy Class B Volumetric Flask with Standard Taper Glass Stopper is durable laboratory glassware designed for routine solution preparation, dilution and volumetric measurements. Manufactured from borosilicate glass, it features a flat-bottom body, long narrow neck, permanent graduation line and interchangeable No. 22 standard taper ground glass stopper. Its Class B accuracy provides an economical option for educational, chemical, pharmaceutical and general research laboratories where Class A precision is not required. Key Features - 1000mL (1 Litre) capacity for laboratory solution preparation. - Class B volumetric accuracy with ±0.60mL tolerance. - Durable borosilicate glass construction. - No. 22 standard taper ground glass stopper included. - Sharp permanent graduation line for consistent measurements. - Large white markings for easy identification. - Flat-bottom design for stable laboratory placement. - Long narrow neck for accurate filling to the calibration mark. - Calibrated to contain liquid at 20°C. - Reusable design for routine laboratory applications. - Economical alternative to Class A volumetric flasks. Specification Details Brand PYREX (Corning) Product Code 5641-1L Capacity 1000mL (1 Litre) Accuracy Class Class B Tolerance ±0.60mL Material Borosilicate Glass Flask Type Economy Volumetric Flask Stopper Size No. 22 Stopper Type Standard Taper Ground Glass Flask Shape Flat Bottom Neck Style Long Narrow Neck Height Approximately 342mm Outer Diameter Approximately 125mm Calibration To Contain (TC) at 20°C Graduation Permanent Single Calibration Line Reusable Yes Quantity per Pack 1 Flask Quantity per Case 6 Flasks Replacement Stopper PYREX Series 7650 No. 22