German standard methods for the examination of water, waste water and sludge; cations (group E); determination of manganese (E 2)
Edition 1983-05

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); determination of the chemical oxygen demand (COD) (S 9)
Edition 1986-09

Mechanical properties of fasteners; nonferrous metal bolts, screws, studs and nuts (ISO 8839:1986); german version EN 28839:1991
Edition 1991-12

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; 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

Hyperloop Transport Services; German version EN 17929:2024
Edition 2024-06

Water quality - Guidance for the identification and enumeration of benthic diatom samples from rivers and lakes; German version EN 14407:2014
Edition 2014-07

Automated liquid handling systems - Part 3: Determination, specification and reporting of volumetric performance (ISO 23783-3:2022); German version EN ISO 23783-3:2023
Edition 2024-04