90.93 Standard confirmed May 21, 2008
CEN/TC 230 Water analysis
13.060.30 Sewage water
Specifiies a method for potable, raw and waste water. A list of effects of other substances on the result is given in the annex. As standard nitrite solutions may become unstable, the concentration of these solutions has to be checked by a given procedure.
90.93 Standard confirmed
May 21, 2008