PYREX 50mL Class A Lifetime Red Volumetric Flask with Glass Stopper 5660-50

The PYREX 50mL Class A Lifetime Red Volumetric Flask with Glass Standard Taper Stopper is precision laboratory glassware designed for accurate solution preparation, chemical dilution, and quantitative analysis. It features a permanent etched calibration line within a narrow red band, providing excellent visibility and long-lasting measurement accuracy. Manufactured with a machine-blown glass body and reinforced long neck, the flask is calibrated to contain 50mL and includes a No. 9 hollow glass standard taper stopper. It is ideal for analytical laboratories, pharmaceutical research, chemical testing, educational institutions, and quality control applications. Key Features - 50mL Capacity: Ideal for accurate preparation of small-volume laboratory solutions. - Class A Accuracy: Precision tolerance of ±0.05mL. - Lifetime Red Marking: Permanently etched calibration line for excellent visibility and durability. - Durable Glass Construction: Machine-blown glass body designed for repeated laboratory use. - Glass Stopper: No. 9 hollow glass standard taper stopper. - Reinforced Neck: Heavy-tubing long neck enhances mechanical strength. - To Contain Calibration: Designed for accurate volumetric solution preparation. - Flat Bottom: Provides stability on laboratory surfaces. - Reusable Design: Suitable for routine professional laboratory applications. Specification Details Brand PYREX Manufacturer Corning Product Code 5660-50 Product Type Volumetric Flask Capacity 50mL Accuracy Class Class A Tolerance ±0.05mL Calibration To Contain (TC) Graduation Lifetime Red Etched Mark Stopper Type Hollow Glass Standard Taper Stopper Size No. 9 Neck Design Long Neck Body Construction Machine-Blown Glass Base Flat Bottom Height Approximately 152mm Outer Diameter Approximately 51mm Quantity per Pack 6 Pieces Quantity per Case 12 Pieces Reusable Yes Applicable Standards ASTM E694, ASTM E542 and ASTM E288 Applications Analytical Chemistry, Solution Preparation, Laboratory Testing, Quality Control