
Water quality--Determination of free chlorine and total chlorine--Spectrophotometric method using NN-diethyl-14-phenylenediamine
NORMA vydaná dňa 3.11.1989
Designation standards: GB/T 11898-1989
Note: NEPLATNÁ
Publication date standards: 3.11.1989
Country: Chinese technical standard
Kategória: Technické normy GB