We manufacture our measuring cylinders tall form subject to DIN EN ISO 4788. Accuracy classes Conformity-certified: for higher accuracy, with circular graduation at the main points, according to class A All conformity-certified measuring and mixing cylinders are equipped with a batch number. A batch certificate is enclosed to every original box. Standard type: aberrant from standard (class B) we provide a higher accuracy. The tolerance confirms to the 1.5-time error margin of class A, with division at the main points.