These volumetric flasks feature machine-blown bodies and heavy-beaded, heavy-tubing necks that are tooled for snap-cap fit. Our volumetric flasks are constructed of premium borosilicate glass, ensuring exceptional clarity and resistance to chemical interactions. Each flask is supplied with a snap cap which helps protect against breakage and spills * Made of premium borosilicate glass with a low coefficient of expansion * Designed “to contain” with a temperature of calibration at 68°F (20°C) * The graduation line is sharply defined and of uniform width * Each flask has a large marking square and includes a snap cap * Wide range of sizes available (10 mL to 1000 mL) * Meets ASTM E-288 Class A specifications & USP standards for glassware SPECIFICATIONS: * Autoclavable: True * Capacity: 50 mL * Color: Clear * Dimensions (L x W): 49 x 136 mm * Material: Borosilicate Glass * Quantity: Pack of 4 * Volume: 50 mL * Warranty: 1 Year