General methods of test for pigments - Part 13: Determination of water-soluble sulphates, chlorides and nitrates (ISO 787-13:1973); Deutsche Fassung EN ISO 787-13:2001— 7 стр.
General methods of test for pigments and extenders - Part 13: Determination of water-soluble sulphates, chlorides and nitrates (ISO 787-13:2002); German version EN ISO 787-13:2002— 7 стр.
