Volumetric flasks, Blaubrand® Conformity Certified. To DIN EN ISO 1042. Class A. Duran® borosilicate glass. With square grip, polyethylene stopper. Calibrated “to contain”. Ring mark and inscriptions in highly contrasting blue enamel. PURprotect versions are safety-coated in blue polyurethane to retain glass fragments in the event of breakage.
Indicated by the symbol HB shows that the product has been manufactured by Brand under quality control procedures according to Eichordnung the German Federal Weights and Measures Regulations. Provided the instrument is used with the recommended accessories and in accordance with the supplied instructions, Brand certify conformity with annex 12 of the Eichordnung.