Characterization of sludges. Protocol for organizing and conducting inter-laboratory tests of methods for chemical and microbiological analysis of sludges— 14 стр.
Characterization of sludges - Filtration properties - Part 2: Determination of the specific resistance to filtration; German version EN 14701-2:2006— 19 стр.
Characterisation of sludges - Filtration properties - Part 2: Determination of the specific resistance to filtration; German version EN 14701-2:2013— 24 стр.