The hardtrack plate (made in Germany) carries a DAkkS certificate (DIN EN ISO 6506-3) issued by the North Rhine-Westphalia Materials Testing Office (MPA NRW).
For MPA NRW certified hardness comparison boards, Excel tables are also provided which include calibration values, limit deviations and tolerable repeatability of the hardness tester and measurement uncertainty of the hardness tester. Record the respective plates. With this table, you can easily record the periodic tests of the hardness tester as part of the quality assurance.
