German standard methods for the examination of water, waste water and sludge; cations (group E); determination of dissolved silver by atomic absorption spectrometry using electrothermal atomization (E 18)
Edition 1990-05

Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
Edition 1993-11

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

Dependability management - Part 3-3: Application guide - Life cycle costing (IEC 60300-3-3:2004); German version EN 60300-3-3:2004
Edition 2005-03

Concepts, abbreviations and symbols in geodesy - Part 1: General
Edition 2020-03