PYREX 500mL Class A Volumetric Flask Only Without Glass Stopper

The PYREX 500mL Class A Volumetric Flask Only is precision laboratory glassware designed for accurate preparation, dilution and measurement of laboratory solutions. Manufactured from durable borosilicate glass, it features a heavy-duty machine-blown body, reinforced long neck and permanent calibration marking for dependable laboratory measurements. Designed to accommodate a No. 19 standard taper glass stopper, this flask is supplied without the stopper. It is ideal for replacement applications, analytical chemistry, pharmaceutical testing, reagent preparation and laboratory quality control. Key Features and Specifications - Capacity: 500mL. - Material: PYREX Type I borosilicate glass. - Accuracy: Class A. - Nominal Class A Tolerance: ±0.20mL. - Flask Type: Class A volumetric flask only. - Stopper: Not included; sold separately. - Stopper Compatibility: No. 19 standard taper glass stopper. - Flask Shape: Flat-bottom volumetric flask. - Base Design: Flat bottom for stable placement. - Neck Style: Long narrow neck. - Height: Approximately 287mm. - Outer Diameter: Approximately 100mm. - Graduation: Permanent calibration line with easy-to-read white markings. - Construction: Heavy-duty machine-blown glass body with reinforced 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, standard solution preparation, reagent dilution, laboratory research and quality control.