German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 29: Spectrometric determination of nitrate with sulfosalicylic acid (D 29); ISO 7890-3:1988, modified
Edition 1994-11

German standard methods for the examination of water, waste water and sludge; cations (group E); determination of potassium by atomic absorption spectrometry (AAS) using an air-acetylene flame (E 13)
Edition 1992-07

German standard methods for the examination of water, waste water and sludge - Sludge and sediments (group S) - Part 19: Determination of the steam-volatile organic acids (S 19)
Edition 1999-12

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of Daphnia to the toxicity of waste water by way of a dilution series (L 30)
Edition 1989-03

German standard methods for the examination of water, waste water and sludge; gaseous components (group G); determination of chlorine dioxide (G 5)
Edition 1990-06

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of green algae to the toxicity of waste water (Scenedesmus chlorophyll fluorescence test) by way of dilution series (L 33)
Edition 1991-03

Laser beam removing - Thermal removing with laser beam - Terms and definitions, influence factors, procedure
Edition 2012-08

Non-destructive testing - Electromagnetic detection - Part 2: Active electro-magnetic induction methods
Edition 2013-02

German standard methods for the examination of water, waste water and sludge - Parameters characterizing effects and substances (group H) - Part 23: Determination of bismut active substances (H 23)
Edition 2010-12

Water quality - Determination of ammonium nitrogen - Method by flow analysis (CFA and FIA) and spectrometric detection (ISO 11732:2005); German version EN ISO 11732:2005
Edition 2005-05