Paints and varnishes - Determination of pH value - Part 1: pH electrodes with glass membrane (ISO 19396-1:2017); German version EN ISO 19396-1:2020— 24 стр.
Paints and varnishes - Determination of pH value - Part 1: pH electrodes with glass membrane (ISO 19396-1:2017); German and English version prEN ISO 19396-1:2019