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

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); detection of salmonellae in disinfected sewage sludge (S 13)
Edition 1992-03

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); determination of the amenability to anaerobic digestion (S 8)
Edition 1985-06

Water quality; determination of dissolved oxygen; iodometric method (ISO 5813:1983); german version EN 25813:1992
Edition 1993-01

German standard methods for the examination of water, waste water and sludge - Cations (group E) - Part 26: Determination of thallium by atomic absorption spectrometry (AAS) using electrothermal atomisation (E 26)
Edition 1997-07

German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 17: Determination of selected nitroaromatic compounds by gas-liquid chromatography (F 17)
Edition 1999-02

Water quality - Determination of chromium - Atomic absorption spectrometric methods; German version EN 1233:1996
Edition 1996-08

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); surfactant biodegradation and elimination test for simulation of municipal waste water treatment plants (L 26)
Edition 1994-05

Logistics - Specifications for reporting crime incidents; German version EN 16352:2013
Edition 2013-06

Value stream management (VSM) (ISO 22468:2020)
Edition 2022-07