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 8466-2:2001)
Edition 2004-06

Water quality - Determination of the threshold odour number (TON) and threshold flavour number (TFN); German version EN 1622:2006
Edition 2006-10

Water quality - Guidance on sampling and processing of the pupal exuviae of Chironomidae (Order Diptera) for ecological assessment; German version EN 15196:2006
Edition 2006-10

German standard methods for the examination of water, waste water and sludge - Cations (group E) - Part 32: Determination of iron by atomic absorption spectrometry (E 32)
Edition 2000-05

Characterization of sludges - Determination of trace elements and phosphorus - Aqua regia extraction methods; German version EN 13346:2000
Edition 2001-04

German standard methods for the examination of water, waste water and sludge - Single components (group P) - Part 8: Determination of nitrilotriacetic acid (NTA), ethylenedinitrilotetraacetic acid (EDTA) and diethylenetrinitrilopentaacetic acid (DTPA) by liqid chromatography (P 8)
Edition 2000-09

Water quality - Sampling of fish with electricity; German version EN 14011:2003
Edition 2003-07

German standard methods for the examination of water, waste water and sludge - Cations (group E) - Part 3: Determination of calcium and magnesium, complexometric method (E 3)
Edition 2002-03

German standard methods for the examination of water, waste water and sludge; cations (group E); determination of copper by atomic absorption spectrometry (AAS) (E 7)
Edition 1991-09

German standard methods for the examination of water, waste water and sludge; cations (group E); determination of nickel by atomic absorption spectrometry (AAS) (E 11)
Edition 1991-09