PYREX 500mL Economy Class B Volumetric Flask with No. 19 Standard Taper Glass Stopper

The PYREX 500mL Economy Class B Volumetric Flask with Glass Standard Taper Stopper is durable laboratory glassware designed for routine solution preparation, dilution and volumetric measurements. It features a flat-bottom body, long narrow neck, permanent graduation line and interchangeable No. 19 standard taper ground glass stopper. Its Class B accuracy offers an economical solution for educational, chemical, pharmaceutical and general research laboratories where Class A precision is not required. Key Features - 500mL capacity for routine laboratory solution preparation. - Class B accuracy with ±0.40mL tolerance. - Durable PYREX laboratory glass construction. - No. 19 standard taper ground glass stopper included. - Sharp permanent graduation line for consistent measurements. - Large white markings for easy reading. - Flat-bottom design for stable laboratory placement. - Long narrow neck for controlled filling to the calibration mark. - Economical alternative to Class A volumetric flasks. - Reusable construction for routine laboratory applications. - Suitable for educational, chemical, pharmaceutical and research laboratories. Specification Details Brand PYREX (Corning) Product Code 5641-500 Capacity 500mL Accuracy Class Class B Tolerance ±0.40mL Material Laboratory Glass Flask Type Economy Volumetric Flask Stopper Size No. 19 Stopper Type Standard Taper Ground Glass Flask Shape Flat Bottom Neck Style Long Narrow Neck Height Approximately 287mm Outer Diameter Approximately 100mm Graduation Permanent Single Calibration Line Reusable Yes Quantity per Pack 6 Flasks Quantity per Case 12 Flasks Replacement Stopper PYREX Series 7650 No. 19