Volumetric flasks, DURAN^®, class A, blue graduation, with hollow glass stopper

IN (TD) calibrated. With dated batch identification. Declaration of conformity acc. to DIN 12600. NS ground with glass stopper. Ring mark and graduation in high contrasting blue enamel. According to DIN EN ISO 1042.
For those products batch calibration reports, which are free of charge, can be generated and printed on www.hirschmannlab.com. Additional single calibration reports or DAkkS certificates (former DKD calibration reports) are available.