Methods for providing information relating to material efficiency aspects of energy-related products; German version EN 45559:2019
Edition 2019-10

German standard methods for the examination of water, waste water and sludge; cations (group E); determination of sodium by atomic absorption spectrometry (ASS) using an air-acetylene flame (E 14)
Edition 1992-07

Characterization of sludges - Determination of dry residue and water content; German version EN 12880:2000
Edition 2001-02

German standard methods for the examination of water, waste water and sludge; test methods using water organisms (group L); determination of oxygen production by means of the light and dark bottle method under laboratory conditions (SPL) (L 14) (determination of oxygen production potential)
Edition 1983-09

German Standard Methods for the Analysis of Water, Waste Water and Sludge; Anions (Group D); Determination of Borate Ions (D 17)
Edition 1981-03

German standard methods for the analysis of water, waste water and sludge; Individual components (Group P); Determination of hydrazine (P 1)
Edition 1982-03

German standard methods for the examination of water, waste water and sludge; general information (group A); sampling of sea water (A 16)
Edition 1987-08

German standard methods for the examination of water, waste water and sludge; anions (group D); determination of dissolved silicate by spectrometry (D 21)
Edition 1990-10

Water quality - Determination of suspended solids - Method by filtration through glass fibre filters; German version EN 872:2005
Edition 2005-04

Biotechnology - Laboratories for research, development and analysis - Containment levels of microbiology laboratories, areas of risk, localities and physical safety requirements; German version EN 12128:1998
Edition 1998-05