2020EN ISO 787-19:2020 General methods of test for pigments - Part 19: Determination of water-soluble nitrates (Salicylic acid method) (ISO 787-19:2020)
1995EN ISO 787-19:1995 General Methods of Test for Pigments - Part 19: Determination of Water-Soluble Nitrates (Salicylic Acid Method) (ISO 787-19 : 1974)