01.10.2019
Our WG participated this year again in two PMP-face-to-face meetings. As a result, an expert group was formed under the leadership of PTB. Our working group aims to revise the present calibration instructions for exhaust gas particle counters, that are used for calibration in industrial laboratories. In addition, the first draft of the report about the ring comparison of the exhaust gas particle counters has been composed, the final version is expected in the beginning of 2018.