PYREX 500mL Class A Lifetime Red Volumetric Flask with Glass Stopper 5660-500

The PYREX 500mL Class A Lifetime Red Volumetric Flask with Glass Standard Taper Stopper is precision laboratory glassware designed for accurate preparation of standard solutions, chemical dilutions, and quantitative analysis. Manufactured from durable borosilicate glass, it features a permanently etched calibration line through a narrow red band for excellent visibility and long-lasting measurement accuracy. The flask is calibrated to contain 500mL and features a reinforced long neck with a No. 19 hollow glass standard taper stopper. It is suitable for analytical laboratories, pharmaceutical research, chemical testing, educational institutions, and quality control applications. Key Features - 500mL Capacity: Ideal for precise preparation of standard laboratory solutions. - Class A Accuracy: Precision tolerance of ±0.20mL. - Lifetime Red Marking: Permanently etched calibration line for enhanced visibility. - Borosilicate Glass: Excellent chemical resistance and durability. - Glass Stopper: No. 19 hollow glass standard taper stopper. - Reinforced Neck: Heavy-tubing neck construction improves mechanical strength. - To Contain Calibration: Designed for accurate volumetric solution preparation. - Flat Bottom Design: Provides stability on laboratory work surfaces. - Reusable Construction: Suitable for repeated laboratory applications. Specification Details Brand PYREX Manufacturer Corning Product Code 5660-500 Product Type Volumetric Flask Capacity 500mL Material Borosilicate Glass Accuracy Class Class A Tolerance ±0.20mL Calibration To Contain (TC) Graduation Lifetime Red Etched Mark Stopper Type Hollow Glass Standard Taper Stopper Size No. 19 Neck Design Long Neck Body Construction Machine-Blown Glass Base Flat Bottom Height Approximately 289mm Outer Diameter Approximately 100mm 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