This standard BS 2690-15:1974 Methods of testing water used in industry is classified in these ICS categories:
13.060.25 Water for industrial use
13.060.50 Examination of water for chemical substances
Titration method for determination of free EDTA; colorimetric method for total salts; polyacrylate and polymethacrylate are separated as copper complexes which are decomposed and the copper is determined. Primarily for control of water treatment.