Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method (ISO 5725-2:1994 including Technical Corrigendum 1:2002)— 97 стр.
Admixtures for concrete, mortar and grout - Test methods - Part 10: Determination of water soluble chloride content; German version EN 480-10:2009— 9 стр.