EN ISO 21627-1(2009) Plastics -- Epoxy resins -- Determination of chlorine content -- Part 1: Inorganic chlorine EN ISO 21627-2(2009) Plastics -- Epoxy resins -- Determination of chlorine content -- Part 2: Easily saponifiable chlorine EN ISO 21627-3(2009) Plastics -- Epoxy resins -- Determination of chlorine content -- Part 3: Total chlorine