DURAN® volumetric flasks, CLASS A - Borosilicate glass

Blue scale, with ring mark and new ergonomic polyethylene stopper Certificate of conformity H with batch certificate. Calibration is done for filling ("in") at a reference temperature of +20°C. The tolerances for the volume comply with accuracy class A, the tolerances of the German “Eichordnung” standard and the recommendations in accordance with DIN and ISO.Possible applications: Precise measuring of specific volumes of liquid, mixing and storage of normal solutions.