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

The PYREX 500mL Class A Mixing Volumetric Flask is precision laboratory glassware designed for accurate solution preparation, dilution and reagent mixing. Manufactured from durable laboratory glass, it features a distinctive upper mixing bulb, permanent calibration line, flat-bottom body and No. 19 glass standard taper stopper. Its Class A accuracy and additional mixing space make it suitable for analytical chemistry, pharmaceutical testing, quality control and laboratory research. Key Features - 500mL calibrated capacity for accurate laboratory solution preparation. - Class A volumetric accuracy with ±0.20mL tolerance. - Special upper mixing bulb for improved mixing when shaken. - Approximately 50mL upper mixing bulb capacity, equivalent to one-tenth of the rated flask capacity. - No. 19 standard taper hollow glass stopper included. - Durable PYREX laboratory glass construction. - Permanent calibration line for accurate volumetric measurements. - Flat-bottom design for stable laboratory placement. - Upper mixing bulb located between the calibration mark and stopper. - Suitable for mixing liquids and dissolving powders. - Reusable for analytical chemistry, pharmaceutical and research applications. Specification Details Brand PYREX (Corning) Product Code 5820-500 Capacity 500mL Accuracy Class Class A Volumetric Tolerance ±0.20mL Material PYREX Laboratory Glass Flask Type Mixing Volumetric Flask Special Feature Upper Mixing Bulb Approximate Upper Bulb Capacity 50mL Upper Bulb Proportion One-Tenth of Rated Flask Capacity Mixing Bulb Location Between Calibration Mark and Stopper Stopper Size No. 19 Stopper Type Glass Standard Taper Stopper Material Glass Stopper Design Hollow Glass Flask Shape Flat Bottom Approximate Height 322mm Approximate Outer Diameter 100mm Graduation Single Calibration Line Reusable Yes Quantity per Pack 1 Flask Quantity per Case 1 Flask Replacement Stopper Series PYREX 7650 Flask and Stopper Supplied Yes Primary Applications Solution Preparation and Reagent Mixing