Abstract The procedure is applicable to the analysis of potable water, and most raw and waste waters. Application to excessively coloured or saline waters shall be preceded by distillation. An ammonium nitrogen concentration of up to 1 mg/l, using the maximum test portion of 40 ml, can be determined. Much higher concentrations can be determined by taking smaller test portions.
GSO ISO 7150-1:2013 history
2013GSO ISO 7150-1:2013 Water quality - Determination of ammonium - Part 1: Manual spectrometric method