GOST R 59667-2021 Atmospheric air quality. Methods for determining the fractional composition of dust by optical method. Calculation of suspended particle concentrations PM2.5, PM10 in atmospheric air based on fractional composition
2021GOST R 59667-2021 Atmospheric air quality. Methods for determining the fractional composition of dust by optical method. Calculation of suspended particle concentrations PM2.5, PM10 in atmospheric air based on fractional composition