PYREX® 2000mL Class A Low Actinic Volumetric Flask with No. 27 Glass Stopper – 55640-2L

The PYREX® 2000mL Class A Low Actinic Volumetric Flask is a precision laboratory glass flask designed for accurate preparation, dilution and measurement of light-sensitive chemical solutions. Manufactured from specially stained low-actinic glass, it helps protect photosensitive reagents while maintaining excellent mechanical strength, chemical stability and thermal resistance. Featuring a flat-bottom design, long neck, permanent calibration line and No. 27 hollow glass standard taper stopper, it provides Class A volumetric accuracy for pharmaceutical analysis, analytical chemistry, laboratory quality control and scientific research. Key Features & Specifications - Brand: PYREX® by Corning - Product Code: 55640-2L - Capacity: 2000mL (2 Litres) - Material: Low Actinic Stained Glass - Flask Type: Volumetric Flask - Accuracy Classification: Class A - Measurement Tolerance: ±0.50mL - Flask Shape: Flat Bottom - Neck Style: Long Neck - Stopper Type: Hollow Glass Standard Taper Stopper - Stopper Size: No. 27 - Stopper Included: Yes - Glass Colour: Low Actinic Red - Light Protection: Helps protect light-sensitive chemicals and laboratory solutions - Graduation: Sharp, permanent calibration line - Markings: Large white lettering for easy identification - Flask Height: Approximately 388mm - Flask Outer Diameter: Approximately 158mm - Construction: Machine-blown body with reinforced heavy-tubing neck - Reusable: Yes - Calibration Standards: ASTM E694, ASTM E542 and ASTM E288 - Manufacturer Packaging: 1 Piece per Pack; 1 Piece per Case - Replacement Stopper Series: Corning 7650 - Applications: Volumetric solution preparation, light-sensitive reagent handling, pharmaceutical testing, analytical chemistry and laboratory quality control.