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ISO 7890-3:1988

Water quality — Determination of nitrate — Part 3: Spectrometric method using sulfosalicylic acid

Publication date:   Nov 24, 1988

General information

90.93   Standard confirmed   Apr 3, 2023

ISO

ISO/TC 147/SC 2 Physical, chemical and biochemical methods

International Standard

13.060.50   Examination of water for chemical substances

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Scope

Procedure given is applicable to raw and potable water. The range covers a nitrat nitrogen concentration up to 0,2 mg/l using the maximum test portion of 25 ml. Using cells of path length 40 mm and a 25 ml test portion the limit of detection lies within the range 0,003 to 0,013 mg/l.

Life cycle

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PUBLISHED
ISO 7890-3:1988
90.93 Standard confirmed
Apr 3, 2023