DIN EN ISO 21253-1:2022-12 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019); German version EN ISO 21253-1:2019
2022DIN EN ISO 21253-1:2022-12 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019); German version EN ISO 21253-1:2019
2018DIN EN ISO 21253-1:2018 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO/DIS 21253-1:2018); German and English version prEN ISO 21253-1:2018