German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 44: Determination of selected heterocyclic aromatic hydrocarbons (NSO heterocycles) in water - Method using gas chromatography and mass spectrometry (GC/MS) after solid-phase extraction (SPE) (F 44)
Edition 2018-02

Pigments, dyestuffs and extenders - Terminology - Part 2: Classification of colouring materials according to colouristic and chemical aspects (ISO 18451-2:2018); German and English version EN ISO 18451-2:2018
Edition 2018-12

Characterization of solids - Quality assurance and quality control - Re-transferability of measurement results of the test characteristics with regard to their distinctness and distribution in the population
Edition 2025-07