Water quality -- Determination of free chlorine and total chlorine -- Part 2: Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes— 24 стр.
Water quality; Determination of free chlorine and total chlorine; Part 2 : Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes— 12 стр.
Water quality; Determination of free chlorine and total chlorine; Part 2 : Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes— 12 стр.
Domestic appliances used for drinking water treatment not connected to water supply. Jug water filter systems. Safety and performance requirements, labeling and information to be supplied— 38 стр.
