Important nutrients such as phosphate or nitrate are present in the water as anions. They determine, for example, the trophic status of a water body or provide indications of overfertilisation. Due to their toxicity and corrosiveness, limit values are specified for most anions in the Drinking Water Ordinance. Chlorine/Br ratios are suitable, for example, to investigate the origin of deep waters.

We analyse your samples (fresh water, thermal water) with regard to this or other questions.

We will be pleased to advise you in order to determine the appropriate analysis for your samples.

Anion determination


Element spectrum/measuring range


Ion chromatography (IC)

F-, Cl-, Br-, NO3-, PO43-, SO42-, J-
> 0.1 mg/L, ppm

Dionex, ICS-1000; separation column IonPac As14 Supressor ERS 500


Methrom, Compact IC 930; column Metrosep A Supp 5-150


Eluent NaHCO3/Na(CO3)2


Phosphate (DIN En ISO 6878)
>0.1 mg/L, ppb

Chromate (US EPA et al. 1992) >0.1 mg/L, ppb

Lamda2, Perkin Elmer