PYREXPLUS® 250mL PVC-Coated Class A Glass Volumetric Flask with Standard Taper Glass Stopper – 65640-250

The PYREXPLUS® 250mL PVC-Coated Class A Volumetric Flask is a precision laboratory glass instrument designed for accurate preparation, measurement, and dilution of chemical solutions. Manufactured from high-quality laboratory glass with a protective PVC coating, it helps minimise glass fragmentation and liquid spills during accidental breakage. The flask features a long narrow neck, an easy-to-read calibration mark, and a No. 16 hollow glass standard taper stopper. With Class A accuracy and a volumetric tolerance of ±0.12mL, it is suitable for pharmaceutical laboratories, analytical chemistry, quality control testing, research institutions, and educational laboratories. Corning Key Features - 250mL Capacity: Suitable for precise preparation of standard solutions and laboratory dilutions. - Class A Accuracy: Provides a volumetric tolerance of ±0.12mL. - Protective PVC Coating: Helps contain glass fragments and minimise liquid spills during accidental breakage. - Single Calibration Mark: Clearly visible graduation line for precise volume adjustment. - No. 16 Glass Stopper: Supplied with a hollow PYREX® standard taper glass stopper. - Long Narrow Neck: Supports accurate meniscus alignment. - Flat Bottom Design: Provides stable positioning on laboratory work surfaces. - 78mm Outer Diameter: Compact body for routine laboratory applications. - 252mm Overall Height: Convenient configuration for volumetric measurement. - Autoclavable at 121°C: Suitable for moist-heat sterilisation within manufacturer limits. - Reusable Construction: Designed for repeated laboratory applications. Corning Specification Details Brand PYREXPLUS® Manufacturer Corning Product Number 65640-250 Product Type Class A Volumetric Flask Capacity 250mL Material Laboratory Glass Protective Coating PVC Flask Style Volumetric Flask Shape Flat Bottom Accuracy Class Class A Volumetric Tolerance ±0.12mL Graduation Type Single Calibration Mark Neck Style Long Narrow Neck Top Style Standard Taper Stopper Stopper Number No. 16 Stopper Material Glass Stopper Style Hollow Glass Outer Diameter Approximately 78mm Overall Height Approximately 252mm Maximum Moist-Heat Temperature 121°C Maximum Dry-Heat Temperature 110°C Autoclavable Yes, within manufacturer limits Sterile Not supplied sterile Reusable Yes Quantity per Pack 6 Pieces Quantity per Case 12 Pieces Replacement Glass Stopper Series Corning 7650