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ČSN is a protected designation of Czech national technical standards.
Water Quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition
WITHDRAWN published on 1.2.1999
Selected format:Water quality. Determination of permanganate index
Standard published on 1.2.1997
Selected format:Jakost vod - Stanovení chemické spotřeby kyslíku manganistanem (CHSKMn).
Change published on 1.10.2006
Selected format:Water quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition
Standard published on 1.4.2020
Selected format:Water quality - Determination of the chemical oxygen demand index (ST-COD) - Small-scale sealed-tube method
Standard published on 1.9.2008
Selected format:Jakost vod - Stanovení chemické spotřeby kyslíku (CHSKcr) - Metoda ve zkumavkách.
Correction published on 1.5.2023
Selected format:Kvalita vod - Stanovení chemické spotřeby kyslíku (CHSKCr) - Metoda ve zkumavkách.
Standard published on 1.2.2013
Selected format:Water quality - Determination of the chemical oxygen demand
Standard published on 1.12.2008
Selected format:Jakost vod - Stanovení chemické spotřeby kyslíku.
Change published on 1.3.2010
Selected format:Jakost vod - Stanovení chemické spotřeby kyslíku.
Correction published on 1.6.2010
Selected format:Latest update: 2026-05-17 (Number of items: 2 278 942)
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