Water quality - Determination of dissolved Li⁺, Na⁺, NH₄⁺, K⁺, Mn²⁺, Ca²⁺, Mg²⁺, Sr²⁺ and Ba²⁺ using ion chromatography - Method for water and waste water (ISO 14911:1998); German version EN ISO 14911:1999
Edition 1999-12

Soil quality - Dissolution for the determination of total element content - Part 2: Dissolution by alkaline fusion (ISO 14869-2:2002)
Edition 2003-01

German standard methods for the examination of water, waste water and sludge - Microbiological methods (group K) - Part 25: Protocol for the validation of alternative confirmation procedures and for verifications of validated alternative confirmation procedures (K 25)
Edition 2024-07

Interface for serial measurement data communication - Part 3: Application services, messages (protocol data units) and protocols
Edition 1998-04