Volumetric Flasks Class A are manufactured from borosilicate glass 3.3 which is resistant to heat and almost all chemicals. These flasks are Individually calibrated to contain a precise volume of liquid. These flasks come with the choice of PP stopper or solid glass stopper and the elongated narrow-neck has a single ground-in graduation mark which, when filled to that point, indicates the volume of liquid it contains at 20°C. Conformity certified, with a batch number printed on the body. Inscriptions are printed with either amber or white enamel for easy and precise reading.
