Borosilicate Glass Volumetric Flask

Class A Borosilicate Glass Volumetric Flasks have a higher accuracy level with tighter volume tolerances and are the industry standard for analytical research. Class B flasks have a wider tolerance (usually double that of Class A) and are more cost-effective for educational or general-purpose labs.

Yes. As a flexible manufacturer, we can provide matched sets of flasks calibrated to identical tolerances, which is critical for comparative analytical studies and reducing experimental variables.

Our flasks use standard ground glass joints (e.g., NS 10/19, NS 14/23) compliant with international ISO standards, ensuring our Glass Labs Volumetric Flasks are compatible with standard stoppers from other major labware brands.

For customized Private Label orders (custom logo and branded inner boxes), the MOQ typically starts at 500 to 1,000 units per size. For our standard neutral factory-branded stock, we offer much more flexible MOQs.

By using Borosilicate 3.3 glass, our flasks have a very low coefficient of thermal expansion. This ensures that even after repeated cleaning and moderate heating, the Calibrated Graduated Cylinder and volumetric flask dimensions remain stable, preserving their accuracy grade.