CEN/TC 230

Registration number (WIID)Project No.TitleStatus
81888EN ISO 23697-1:2025Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23697-1:2023)Aptauja slēgta
81889EN ISO 23697-2:2025Water quality - Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Part 2: Chromotropic acid colour reaction (ISO 23697-2:2023)Aptauja slēgta
81886EN ISO 23696-1:2025Water quality - Determination of nitrate in water using small-scale sealed tubes - Part 1: Dimethylphenol colour reaction (ISO 23696-1:2023)Aptauja slēgta
77819prEN ISO 22032Water quality - Determination of polybrominated diphenyl ethers (PBDE) in sediment, suspended (particulate) matter and biota - Method using gas chromatography-tandem mass spectrometry or high resolution mass spectrometry (GC-MS/MS; HRMS) (ISO/DIS 22032:2025)Aptauja slēgta
77982prEN ISO 13647Water quality - Enumeration of culturable microorganisms - Colony count by spread plate inoculation on R2A medium (ISO/DIS 13647:2025)Aptauja slēgta
77973prEN ISO 9308-4Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 4: Membrane filtration method for Escherichia coli in water with high levels of background bacteria (ISO/DIS 9308-4:2025)Aptauja
80200prEN ISO 9697Water quality - Gross beta activity - Test method using thick source (ISO/DIS 9697:2025)Aptauja
11078LVS EN 12780:2003 AWater quality - Detection and enumeration of Pseudomonas aeruginosa by membrane filtrationAtcelts
41076LVS EN ISO 13162:2015Water quality - Determination of carbon 14 activity - Liquid scintillation counting method (ISO 13162:2011)Atcelts
11009LVS EN ISO 9509:2003Water quality - Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste waterAtcelts
Displaying 301-310 of 814 results.