PYREX 4000mL Class A Volumetric Flask with No. 38 Standard Taper Pennyhead Glass Stopper

The PYREX 4000mL Class A Volumetric Flask with Standard Taper Glass Stopper is precision laboratory glassware designed for accurate large-volume solution preparation, dilution and volumetric measurements. Manufactured from durable borosilicate glass, it features a heavy-duty machine-blown body, reinforced long neck, permanent graduation line and No. 38 standard taper pennyhead glass stopper. Its Class A accuracy ensures reliable volumetric measurements for analytical chemistry, pharmaceutical testing, laboratory research, reagent preparation and quality control applications. Key Features and Specifications - Capacity: 4000mL (4 Litres). - Material: PYREX Type I borosilicate glass. - Accuracy: Class A. - Tolerance: ±1.0mL. - Flask Type: Complete Class A volumetric flask. - Stopper: No. 38 standard taper PYREX glass stopper. - Stopper Style: Pennyhead glass stopper. - Flask Shape: Flat-bottom volumetric flask. - Base Design: Flat bottom for stable placement. - Neck Style: Long narrow neck. - Height: Approximately 480mm. - Outer Diameter: Approximately 205mm. - Graduation: Sharp permanent calibration line with large white markings. - Construction: Heavy-duty machine-blown glass body with reinforced heavy-tubing neck. - Calibration Standards: ASTM E694, ASTM E542 and ASTM E288. - Reusability: Reusable laboratory glassware. - Manufacturer Packaging: 1 flask per pack; 1 flask per case. - Applications: Analytical chemistry, pharmaceutical testing, large-volume standard solution preparation, reagent dilution, laboratory research and quality control.