ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
ISO 5725-2:1994 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
GOST R ISO 3071-2008 history
2008GOST R ISO 3071-2008 Textiles. Method for determination of pH of aqueous extract