Certain features of will be down for maintenance Saturday afternoon/evening, February 24th starting at 3:00 pm CT until 9:00 pm CT.

Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Ammonium in Sewage Sludge

Prove InstrumentsPhotometric determination using the indophenol blue method

Sample Preparation

Charcoal activated for soil tests
Folded filter

In a 1000-ml volumetric flask mix 50 g of the sample with water for analysis and fill up to volume. Let the insoluble parts settle and decant 250 ml of the supernatant solution. Then mix with 2.5 g of charcoal activated for soil tests and stir for 10 minutes, before filtering through a folded filter.


Determine with the below mentioned test kits.


Ammonium content in mg/l NH4 = analysis value in mg/l NH4 x 20



Product 114544 is not compatible with Move 100.