Heathrow Scientific 2307A-1000 Volumetric Flask, Amber, Class A, Glass Stopper, 1000 mL, 2/pk

Volumetric flasks are constructed of low-actinic amber glass, providing protection for materials that are sensitive to light. Each flask features machine-blown bodies and heavy-beaded, heavy-tubing necks that are tooled for standard taper glass stoppers. Each volumetric flask is supplied with a standard taper glass stopper which provides a leakproof seal. This airtight seal not only preserves the integrity of your samples but also enhances the reliability of your volumetric measurements. Features: Low-actinic amber for light sensitive materials 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 glass stopper Wide range of sizes available (10 mL to 1000 mL) Meets ASTM E-288 Class A specifications & USP standards for glassware Stopper No. 22 Click here for Most Common Types of Lab Mixing Equipment