The standard applies to all types of water, except wastewater. See NEN 3235 7.3 for this Contents lower than 0.01 mg/l Cu cannot be determined with sufficient accuracy. The following components do not interfere with the determination if the concentrations are not higher than indicated: Fe, Zn, Cr, Co, Ni, Pb, Al, Cd, Mn 10 mg/l N03-, P043" 100 mg/1 Na, K , Ca, Mg, S042- 1000 mg/l
NEN 6488-1982 history
1982NEN 6488-1982 Water - Photometric determination of the copper content