UNE-EN ISO 787-13:2003 General methods of test for pigments and extenders- Part 13: Determination of water-soluble sulfates, chlorides and nitrates. (ISO 787-13:2002)
2020UNE-EN ISO 787-13:2020 General methods of test for pigments and extenders - Part 13: Determination of water-soluble sulfates, chlorides and nitrates (ISO 787-13:2019)
2003UNE-EN ISO 787-13:2003 General methods of test for pigments and extenders- Part 13: Determination of water-soluble sulfates, chlorides and nitrates. (ISO 787-13:2002)