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Water quality - Determination of cyclic volatile methylsiloxanes in water - Part 2: Method using liquid-liquid extraction with gas chromatography-mass spectrometry (GC-MS) (ISO 20596-2:2021)

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)

Water quality - Multi-compound class methods - Part 2: Criteria for the quantitative determination of organic substances using a multi-compound class analytical method (ISO 21253-2:2019)

Ūdens kvalitāte. Atsevišķu aktīvo farmaceitisko vielu, transformācijas produktu un citu organisko vielu izšķīdušās frakcijas noteikšana ūdenī un attīrītos notekūdeņos. Metode, lietojot augstas izšķirtspējas šķidruma hromatogrāfiju un masas spektrometrisko noteikšanu (HPLC-MS/MS vai -HRMS) pēc tiešas ievadīšanas (ISO 21676:2018)

Water quality - Guidance for rapid radioactivity measurements in nuclear or radiological emergency situation (ISO 22017:2020)

Water quality - Technetium-99 - Part 1: Test method using liquid scintillation counting (ISO 22125-1:2019)

Water quality - Technetium-99 - Part 2: Test method using inductively coupled plasma mass spectrometry (ICP-MS) (ISO 22125-2:2019)

Water quality - Iron-55 - Test method using liquid scintillation counting (ISO 22515:2021)

Water quality - Radium 226 and Radium 228 - Test method using liquid scintillation counting (ISO 22908:2020)

Water quality - Calculation of biological equivalence (BEQ) concentrations (ISO 23196:2022)

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023)

Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23696-1:2023)