PYREX 1000mL Class A Mixing Volumetric Flask with No. 22 Glass Standard Taper Stopper

The PYREX 1000mL Class A Mixing Volumetric Flask is precision laboratory glassware designed for accurate solution preparation, dilution and mixing. It features a durable machine-blown glass body, heavy-tubing neck, No. 22 glass standard taper stopper and a distinctive upper mixing bulb. The additional bulb provides space for efficient mixing of liquids or powders when shaken, making the flask suitable for analytical chemistry, pharmaceutical testing, quality control and laboratory research. Key Features - 1000mL (1 Litre) calibrated capacity for accurate laboratory solution preparation. - Class A volumetric accuracy with ±0.30mL tolerance. - Special upper mixing bulb for efficient mixing when shaken. - Upper bulb capacity approximately 100mL, equivalent to one-tenth of the rated flask capacity. - No. 22 standard taper hollow glass stopper included. - Durable PYREX laboratory glass construction. - Machine-blown glass body for improved strength. - Heavy-tubing neck for increased durability. - Permanent calibration line for accurate volume measurements. - Flat-bottom construction for stable laboratory placement. - Calibrated To Contain (TC) at 20°C. - Manufactured to ASTM Class A volumetric glassware requirements. - Reusable for analytical chemistry, pharmaceutical and research applications. Specification Details Brand PYREX (Corning) Product Code 5820-1L Capacity 1000mL (1 Litre) Accuracy Class Class A Volumetric Tolerance ±0.30mL Material PYREX Laboratory Glass Flask Type Mixing Volumetric Flask Special Feature Upper Mixing Bulb Approximate Upper Bulb Capacity 100mL Mixing Bulb Location Between Calibration Mark and Stopper Calibration Type To Contain (TC) at 20°C Stopper Size No. 22 Stopper Type Glass Standard Taper Stopper Material Glass Stopper Design Hollow Glass Flask Shape Flat Bottom Neck Construction Heavy-Tubing Neck Height Approximately 323mm Outer Diameter Approximately 125mm Applicable Standards ASTM E694, ASTM E542 and ASTM E288 Reusable Yes Quantity per Pack 1 Flask Quantity per Case 6 Flasks Replacement Stopper PYREX Series 7650 No. 22 Flask and Stopper Supplied Yes Primary Applications Solution Preparation and Reagent Mixing