Registration number (WIID)Project No.TitleStatus
10960LVS EN 1233:1996Water quality - Determination of chromium - Atomic absorption spectrometric methods 
10966LVS EN 1484:1997Water analysis - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC) 
10973LVS EN 26461-1:1993Water quality - Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) - Part 1: Method by enrichment in a liquid medium (ISO 6461-1:1986) 
21813LVS EN ISO 15681-1:2004Water quality - Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) - Part 1: Method by flow injection analysis (FIA) (ISO 15681-1:2003) 
22922LVS EN ISO 11732:2005Water quality - Determination of ammonium nitrogen - Method by flow analysis (CFA and FIA) and spectrometric detection (ISO 11732:2005) 
10995LVS EN 1899-1:1998Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition (ISO 5815:1989, modified) 
78134LVS EN 18025:2025Water quality - Guidance standard on a strategic approach to river restoration 
65985LVS EN ISO 13161:2020Water quality - Polonium 210 - Test method using alpha spectrometry (ISO 13161:2020)Standarts spēkā
62648LVS EN 14614:2020Water quality - Guidance standard for assessing the hydromorphological features of riversStandarts spēkā
67604LVS EN ISO 22125-2:2020Water quality - Technetium-99 - Part 2: Test method using inductively coupled plasma mass spectrometry (ICP-MS) (ISO 22125-2:2019)Standarts spēkā
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