DS DS/EN ISO 20843
DS DSEN SO 20843 2011-FEB-14 Petroleum and related products - Determnaton of pH of fre-resstant fluds wthn categores HFAE HFAS and HFC
DS DSEN SO 20843 2011-FEB-14 Petroleum and related products - Determnaton of pH of fre-resstant fluds wthn categores HFAE HFAS and HFC
ISO 20843:2010 specifies a test method to determine the pH value of non-flammable fluids within categories HFAE, HFAS and HFC, as classified in ISO 6743-4.