Hard facts
Applications & tips
Back to overviewThe MPA/NRW provides a file for download under the following link in the form of an Excel file for periodic testing and measurement uncertainty. After entering the MPA/NRW number and the hardness value from the calibration certificate, the relevant file becomes available to download.
www.mpanrw.de/downloads/haertevergleichsplatten-dateiabruf-messunsicherheit/