Since 1995, we have been functioning as Laboratory Volumetric Flask Manufacturer, Exporter and Supplier from Pondicherry, India. Featuring wide. A volumetric flask is a piece of laboratory apparatus, a type of laboratory flask, calibrated to contain a precise volume at a certain temperature. Volumetric flasks are used for precise dilutions and preparation of standard solutions. These flasks are usually pear-shaped, with a flat bottom, and made of glass or plastic.