Class A, borosilicate glass 3.3, with amber stain graduation, with declaration of conformity acc. to DIN 12600, with dated batch identification, main point ring graduation, with spout, hexagonal glass socket, calibrated for IN, DIN EN ISO 4788. Batch Certificate of Performance and a DAkkS-Certificate (former DKD Calibration Certificate) are available on request. Class A, borosilicate glass 3.3, with amber stain graduation, with declaration of conformity acc. to DIN 12600, with dated batch identification, main point ring graduation, with spout, hexagonal glass socket, calibrated for IN, DIN EN ISO 4788. Batch Certificate of Performance and a DAkkS-Certificate (former DKD Calibration Certificate) are available on request.