ISO 5663:1984 Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium

ISO 5664:1984 Water quality — Determination of ammonium — Distillation and titration method
ISO 5813:1983 Water quality — Determination of dissolved oxygen — Iodometric method
ISO 5814:2012 Water quality — Determination of dissolved oxygen — Electrochemical probe method
ISO 5815-2:2003 Water quality — Determination of biochemical oxygen demand after n days (BODn) — Part 2: Method for undiluted samples
ISO 5961:1994 Water quality — Determination of cadmium by atomic absorption spectrometry
ISO 6058:1984 Water quality — Determination of calcium content — EDTA titrimetric method
ISO 6059:1984 Water quality — Determination of the sum of calcium and magnesium — EDTA titrimetric method
ISO 6060:1989 Water quality — Determination of the chemical oxygen demand
ISO 6332:1988 Water quality — Determination of iron — Spectrometric method using 1,10-phenanthroline
ISO 6333:1986 Water quality — Determination of manganese — Formaldoxime spectrometric method
ISO 6439:1990 Water quality — Determination of phenol index — 4-Aminoantipyrine spectrometric methods after distillation
ISO 6468:1996 Water quality — Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes — Gas chromatographic method after liquid-liquid extraction
ISO 6703-1:1984 Water quality — Determination of cyanide — Part 1: Determination of total cyanide
ISO 6703-2:1984 Water quality — Determination of cyanide — Part 2: Determination of easily liberatable cyanide
ISO 6777:1984 Water quality — Determination of nitrite — Molecular absorption spectrometric method
ISO 6778:1984 Water quality — Determination of ammonium — Potentiometric method
ISO 6878:2004 Water quality — Determination of phosphorus — Ammonium molybdate spectrometric method
ISO 7027-1:2016 Water quality — Determination of turbidity — Part 1: Quantitative methods
ISO 7027-2:2017 Water quality — Determination of turbidity — Part 2: Semi-quantitative methods for the assessment of transparency of waters
ISO 7150-1:1984 Water quality — Determination of ammonium — Part 1: Manual spectrometric method
ISO 7393-1:1985 Water quality — Determination of free chlorine and total chlorine — Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine
ISO 7393-1:1985/COR 1:2001 Water quality — Determination of free chlorine and total chlorine — Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine — Technical Corrigendum 1
ISO 7393-2:2017 Water quality — Determination of free chlorine and total chlorine — Part 2: Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes
ISO 7393-3:1990 Water quality — Determination of free chlorine and total chlorine — Part 3: Iodometric titration method for the determination of total chlorine
ISO 7875-1:1996 Water quality — Determination of surfactants — Part 1: Determination of anionic surfactants by measurement of the methylene blue index (MBAS)
ISO 7875-1:1996/COR 1:2003 Water quality — Determination of surfactants — Part 1: Determination of anionic surfactants by measurement of the methylene blue index (MBAS) — Technical Corrigendum 1
ISO 7875-2:1984 Water quality — Determination of surfactants — Part 2: Determination of non-ionic surfactants using Dragendorff reagent
ISO 7887:2011 Water quality — Examination and determination of colour
ISO 7888:1985 Water quality — Determination of electrical conductivity
ISO 7890-3:1988 Water quality — Determination of nitrate — Part 3: Spectrometric method using sulfosalicylic acid
ISO 7980:1986 Water quality — Determination of calcium and magnesium — Atomic absorption spectrometric method
ISO 7981-1:2005 Water quality — Determination of polycyclic aromatic hydrocarbons (PAH) — Part 1: Determination of six PAH by high-performance thin-layer chromatography with fluorescence detection after liquid-liquid extraction
ISO 7981-2:2005 Water quality — Determination of polycyclic aromatic hydrocarbons (PAH) — Part 2: Determination of six PAH by high-performance liquid chromatography with fluorescence detection after liquid-liquid extraction
ISO 8165-2:1999 Water quality — Determination of selected monovalent phenols — Part 2: Method by derivatization and gas chromatography
ISO 8245:1999 Water quality — Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
ISO 8288:1986 Water quality — Determination of cobalt, nickel, copper, zinc, cadmium and lead — Flame atomic absorption spectrometric methods
ISO 8466-1:2021 Water quality — Calibration and evaluation of analytical methods — Part 1: Linear calibration function
ISO 8466-2:2001 Water quality — Calibration and evaluation of analytical methods and estimation of performance characteristics — Part 2: Calibration strategy for non-linear second-order calibration functions
ISO 8467:1993 Water quality — Determination of permanganate index
ISO 9297:1989 Water quality — Determination of chloride — Silver nitrate titration with chromate indicator (Mohr’s method)
ISO 9377-2:2000 Water quality — Determination of hydrocarbon oil index — Part 2: Method using solvent extraction and gas chromatography
ISO 9390:1990 Water quality — Determination of borate — Spectrometric method using azomethine-H
ISO 9562:2004 Water quality — Determination of adsorbable organically bound halogens (AOX)
ISO 9963-1:1994 Water quality — Determination of alkalinity — Part 1: Determination of total and composite alkalinity
ISO 9963-2:1994 Water quality — Determination of alkalinity — Part 2: Determination of carbonate alkalinity
ISO 9964-1:1993 Water quality — Determination of sodium and potassium — Part 1: Determination of sodium by atomic absorption spectrometry
ISO 9964-2:1993 Water quality — Determination of sodium and potassium — Part 2: Determination of potassium by atomic absorption spectrometry
ISO 9964-3:1993 Water quality — Determination of sodium and potassium — Part 3: Determination of sodium and potassium by flame emission spectrometry
ISO 10260:1992 Water quality — Measurement of biochemical parameters — Spectrometric determination of the chlorophyll-a concentration
ISO 10301:1997 Water quality — Determination of highly volatile halogenated hydrocarbons — Gas-chromatographic methods
ISO 10304-1:2007 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
ISO 10304-1:2007/COR 1:2010 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate — Technical Corrigendum 1
ISO 10304-3:1997 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 3: Determination of chromate, iodide, sulfite, thiocyanate and thiosulfate
ISO 10304-4:2000 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 4: Determination of chlorate, chloride and chlorite in water with low contamination
ISO 10523:2008 Water quality — Determination of pH
ISO 10695:2000 Water quality — Determination of selected organic nitrogen and phosphorus compounds — Gas chromatographic methods
ISO 11206:2011 Water quality — Determination of dissolved bromate — Method using ion chromatography (IC) and post column reaction (PCR)
ISO 11352:2012 Water quality — Estimation of measurement uncertainty based on validation and quality control data
ISO 11369:1997 Water quality — Determination of selected plant treatment agents — Method using high performance liquid chromatography with UV detection after solid-liquid extraction
ISO/TS 11370:2000 Water quality — Determination of selected organic plant-treatment agents — Automated multiple development (AMD) technique
ISO 11423-1:1997 Water quality — Determination of benzene and some derivatives — Part 1: Head-space gas chromatographic method
ISO 11423-2:1997 Water quality — Determination of benzene and some derivatives — Part 2: Method using extraction and gas chromatography
ISO 11732:2005 Water quality — Determination of ammonium nitrogen — Method by flow analysis (CFA and FIA) and spectrometric detection
ISO 11885:2007 Water quality — Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES)
ISO 11905-1:1997 Water quality — Determination of nitrogen — Part 1: Method using oxidative digestion with peroxodisulfate
ISO 11923:1997 Water quality — Determination of suspended solids by filtration through glass-fibre filters
ISO 12010:2019 Water quality — Determination of short-chain polychlorinated alkanes (SCCP) in water — Method using gas chromatography-mass spectrometry (GC-MS) and negative-ion chemical ionization (NCI)
ISO 12020:1997 Water quality — Determination of aluminium — Atomic absorption spectrometric methods
ISO 12846:2012 Water quality — Determination of mercury — Method using atomic absorption spectrometry (AAS) with and without enrichment
ISO 13395:1996 Water quality — Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
ISO/TS 13530:2009 Water quality — Guidance on analytical quality control for chemical and physicochemical water analysis
ISO 14402:1999 Water quality — Determination of phenol index by flow analysis (FIA and CFA)
ISO 14403-1:2012 Water quality — Determination of total cyanide and free cyanide using flow analysis (FIA and CFA) — Part 1: Method using flow injection analysis (FIA)
ISO 14403-2:2012 Water quality — Determination of total cyanide and free cyanide using flow analysis (FIA and CFA) — Part 2: Method using continuous flow analysis (CFA)
ISO 14911:1998 Water quality — Determination of dissolved Li+, Na+, NH4+, K+, Mn2+, Ca2+, Mg2+, Sr2+ and Ba2+ using ion chromatography — Method for water and waste water
ISO 15061:2001 Water quality — Determination of dissolved bromate — Method by liquid chromatography of ions
ISO 15586:2003 Water quality — Determination of trace elements using atomic absorption spectrometry with graphite furnace
ISO 15587-1:2002 Water quality — Digestion for the determination of selected elements in water — Part 1: Aqua regia digestion
ISO 15587-2:2002 Water quality — Digestion for the determination of selected elements in water — Part 2: Nitric acid digestion
ISO 15680:2003 Water quality — Gas-chromatographic determination of a number of monocyclic aromatic hydrocarbons, naphthalene and several chlorinated compounds using purge-and-trap and thermal desorption
ISO 15681-1:2003 Water quality — Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) — Part 1: Method by flow injection analysis (FIA)
ISO 15681-2:2018 Water quality — Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) — Part 2: Method by continuous flow analysis (CFA)
ISO 15682:2000 Water quality — Determination of chloride by flow analysis (CFA and FIA) and photometric or potentiometric detection
ISO 15705:2002 Water quality — Determination of the chemical oxygen demand index (ST-COD) — Small-scale sealed-tube method
ISO 15913:2000 Water quality — Determination of selected phenoxyalkanoic herbicides, including bentazones and hydroxybenzonitriles by gas chromatography and mass spectrometry after solid phase extraction and derivatization
ISO 15923-1:2013 Water quality — Determination of selected parameters by discrete analysis systems — Part 1: Ammonium, nitrate, nitrite, chloride, orthophosphate, sulfate and silicate with photometric detection
ISO/TS 15923-2:2017 Water quality — Determination of selected parameters by discrete analysis systems — Part 2: Chromium(VI), fluoride, total alkalinity, total hardness, calcium, magnesium, iron, iron(II), manganese and aluminium with photometric detection
ISO 16264:2002 Water quality — Determination of soluble silicates by flow analysis (FIA and CFA) and photometric detection
ISO 16265:2009 Water quality — Determination of the methylene blue active substances (MBAS) index — Method using continuous flow analysis (CFA)
ISO 16308:2014 Water quality — Determination of glyphosate and AMPA — Method using high performance liquid chromatography (HPLC) with tandem mass spectrometric detection
ISO/TS 16489:2006 Water quality — Guidance for establishing the equivalency of results
ISO 16588:2002 Water quality — Determination of six complexing agents — Gas-chromatographic method
ISO 16588:2002/AMD 1:2004 Water quality — Determination of six complexing agents — Gas-chromatographic method — Amendment 1
ISO 17289:2014 Water quality — Determination of dissolved oxygen — Optical sensor method
ISO 17294-1:2004 Water quality — Application of inductively coupled plasma mass spectrometry (ICP-MS) — Part 1: General guidelines
ISO 17294-2:2016 Water quality — Application of inductively coupled plasma mass spectrometry (ICP-MS) — Part 2: Determination of selected elements including uranium isotopes
ISO 17353:2004 Water quality — Determination of selected organotin compounds — Gas chromatographic method
ISO 17378-2:2014 Water quality — Determination of arsenic and antimony — Part 2: Method using hydride generation atomic absorption spectrometry (HG-AAS)
ISO 17495:2001 Water quality — Determination of selected nitrophenols — Method by solid-phase extraction and gas chromatography with mass spectrometric detection
ISO 17852:2006 Water quality — Determination of mercury — Method using atomic fluorescence spectrometry
ISO 17858:2007 Water quality — Determination of dioxin-like polychlorinated biphenyls — Method using gas chromatography/mass spectrometry
ISO 17943:2016 Water quality — Determination of volatile organic compounds in water — Method using headspace solid-phase micro-extraction (HS-SPME) followed by gas chromatography-mass spectrometry (GC-MS)
ISO 17993:2002 Water quality — Determination of 15 polycyclic aromatic hydrocarbons (PAH) in water by HPLC with fluorescence detection after liquid-liquid extraction
ISO 18073:2004 Water quality — Determination of tetra- to octa-chlorinated dioxins and furans — Method using isotope dilution HRGC/HRMS
ISO 18191:2015 Water quality — Determination of pHt in sea water — Method using the indicator dye m-cresol purple
ISO 18412:2005 Water quality — Determination of chromium(VI) — Photometric method for weakly contaminated water
ISO 18635:2016 Water quality — Determination of short-chain polychlorinated alkanes (SCCPs) in sediment, sewage sludge and suspended (particulate) matter — Method using gas chromatography-mass spectrometry (GC-MS) and electron capture negative ionization (ECNI)
ISO 18856:2004 Water quality — Determination of selected phthalates using gas chromatography/mass spectrometry
ISO 18857-1:2005 Water quality — Determination of selected alkylphenols — Part 1: Method for non-filtered samples using liquid-liquid extraction and gas chromatography with mass selective detection
ISO 18857-2:2009 Water quality — Determination of selected alkylphenols — Part 2: Gas chromatographic-mass spectrometric determination of alkylphenols, their ethoxylates and bisphenol A in non-filtered samples following solid-phase extraction and derivatisation
ISO 19340:2017 Water quality — Determination of dissolved perchlorate — Method using ion chromatography (IC)
ISO/TS 19620:2018 Water quality — Determination of arsenic(III) and arsenic(V) species — Method using high performance liquid chromatography (HPLC) with detection by inductively coupled plasma mass spectrometry (ICP-MS) or hydride generation atomic fluorescence spectrometry (HG-AFS)
ISO 20236:2018 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
ISO 20595:2018 Water quality — Determination of selected highly volatile organic compounds in water — Method using gas chromatography and mass spectrometry by static headspace technique (HS-GC-MS)
ISO 20596-2:2021 Water quality — Determination of cyclic volatile methylsiloxanes in water — Part 2: Method using liquid-liquid extraction with gas chromatography-mass spectrometry (GC-MS)
ISO/TS 20612:2007 Water quality — Interlaboratory comparisons for proficiency testing of analytical chemistry laboratories
ISO 21675:2019 Water quality — Determination of perfluoroalkyl and polyfluoroalkyl substances (PFAS) in water — Method using solid phase extraction and liquid chromatography-tandem mass spectrometry (LC-MS/MS)
ISO 21676:2018 Water quality — Determination of the dissolved fraction of selected active pharmaceutical ingredients, transformation products and other organic substances in water and treated waste water — Method using high performance liquid chromatography and mass spectrometric detection (HPLC-MS/MS or -HRMS) after direct injection
ISO 21793:2020 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved bound phosphorus (DPb) after wet chemical catalysed ozone hydroxyl radical oxidation (COHR)
ISO 21863:2020 Water quality — Determination of alkylmercury compounds in water — Method using gas chromatography-mass spectrometry (GC-MS) after phenylation and solvent extraction
ISO 22032:2006 Water quality — Determination of selected polybrominated diphenyl ethers in sediment and sewage sludge — Method using extraction and gas chromatography/mass spectrometry
ISO 22066:2020 Water quality — Determination of total cyanide — Method using segmented flow injection, in-line ultraviolet digestion analysis by gas diffusion and amperometric detection
ISO 22104:2021 Water quality — Determination of microcystins — Method using liquid chromatography and tandem mass spectrometry (LC-MS/MS)
ISO 22478:2006 Water quality — Determination of certain explosives and related compounds — Method using high-performance liquid chromatography (HPLC) with UV detection
ISO 22719:2008 Water quality — Determination of total alkalinity in sea water using high precision potentiometric titration
ISO 22743:2006 Water quality — Determination of sulfates — Method by continuous flow analysis (CFA)
ISO 22743:2006/COR 1:2007 Water quality — Determination of sulfates — Method by continuous flow analysis (CFA) — Technical Corrigendum 1
ISO 23631:2006 Water quality — Determination of dalapon, trichloroacetic acid and selected haloacetic acids — Method using gas chromatography (GC-ECD and/or GC-MS detection) after liquid-liquid extraction and derivatization
ISO 23913:2006 Water quality — Determination of chromium(VI) — Method using flow analysis (FIA and CFA) and spectrometric detection
ISO 25101:2009 Water quality — Determination of perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) — Method for unfiltered samples using solid phase extraction and liquid chromatography/mass spectrometry
ISO 27108:2010 Water quality — Determination of selected plant treatment agents and biocide products — Method using solid-phase microextraction (SPME) followed by gas chromatography-mass spectrometry (GC-MS)
ISO 28540:2011 Water quality — Determination of 16 polycyclic aromatic hydrocarbons (PAH) in water — Method using gas chromatography with mass spectrometric detection (GC-MS)
ISO/TS 28581:2012 Water quality — Determination of selected non-polar substances — Method using gas chromatography with mass spectrometric detection (GC-MS)