Surface active agents - Determination of anionic surface active agents - Potentiometric two-phase titration method; German version EN 14480:2004— 16 стр.
Surface active agents - Determination of anionic surface active agents - Potentiometric two-phase titration method; German version EN 14480:2004, Corrigenda to DIN EN 14480:2004-11; German version EN 14480:2004/AC:2006— 2 стр.