Fertilizers - Extraction of soluble phosphorus according to Petermann at ambient temperature; German version EN 15922:2011
Edition 2011-08

Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant (ISO 14255:1998)
Edition 1998-11

Pepper an pepper oleoresins - Determination of piperine content - Method using high-performance liquid chromatography (HPLC)
Edition 1999-09

Leather - Chemical determination of chromium(VI) content in leather - Part 1: Colorimetric method (ISO 17075-1:2017); German version EN ISO 17075-1:2017
Edition 2017-05

Ferronickel; determination of cobalt content; flame atomic absorption spectrometric method (ISO 7520:1985); german version EN 27520:1991
Edition 1992-02

Fruit and vegetable juices - Determination of the free amino acids content - Liquid chromatographic method; German version EN 12742:1999
Edition 1999-04

Animal feeding stuffs - Determination of semduramicin content - Liquid chromatographic method using a "tree" analytical approach; German version EN 16158:2012
Edition 2012-05

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

Plastics - Hardeners and accelerators for epoxide resins - Determination of free acid in acid anhydride (ISO 7327:1994); German version EN ISO 7327:1997
Edition 1997-11

Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997); German version EN ISO 11905-1:1998
Edition 1998-08