90.20 Standard under periodical review Jan 15, 2024
ISO
ISO/TC 147/SC 2 Physical, chemical and biochemical methods
International Standard
13.060.50 Examination of water for chemical substances
Published
ISO 11732:2005 specifies methods suitable for the determination of ammonium nitrogen in various types of waters (such as ground, drinking, surface, and waste waters) in mass concentrations ranging from 0,1 mg/l to 10 mg/l (in the undiluted sample), applying either FIA or CFA. In particular cases, the range of application may be adapted by varying the operating conditions.
WITHDRAWN
ISO 11732:1997
PUBLISHED
ISO 11732:2005
90.20
Standard under periodical review
Jan 15, 2024