Volumetric instruments that comply with the requirements of applicable standards (e.g. the weights and measures regulation) are labelled accordingly with “DE-M” The “DM 21” mark is made up of the elements DE (which stands for “Deutschland”), M (which stands for “Metrology” (metrology), and the year number 21 (2021), the year in which the measuring instrument was labelled.

Volumetric flasks, Measuring Cylinders, Pipettes, Burettes with a batch number and accuracy Class A are supplied with a batch certificate. This certificate documents the mean value obtained from measuring the batch in question, the standard deviation and the date of issue.

Volumetric flasks, Measuring Cylinders, Pipettes, Burettes which are numbered individually, are supplied with an individual certificate. The individual number is permanently printed onto the Volumetric flask, Measuring Cylinder, Pipettes, Burettes and is entered on the corresponding certificate.

Volumetric Flasks, Measuring Cylinders, Pipettes, Burettes, Hydrometers, Thermometers which are numbered individually, are supplied with an NABL : ISO/IEC 17025: 2017 certificate. The individual number is permanently printed onto the Volumetric flask, Measuring Cylinder, Pipettes, Burettes, Hydrometers, Thermometers and is entered on
the corresponding certificate.

Certificate of Compliance is issued with Beakers, Conical Flasks and Reagent Bottles to certify their compliance with the respective standards. This certificate is provided with each and every piece.