Expression of performance of electrochemical analyzers - Part 2: pH-value (IEC 60746-2:2003 + Corrigendum 2003); German version EN 60746-2:2003— 23 стр.
Expression of performance of electrochemical analyzers - Part 4: Dissolved oxygen in water measured by membrane covered amperometric sensors (IEC 60746-4:1992)— 17 стр.