| VISOCOLOR® Ammonium (DEV) |
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Determination of ammonium
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DEV procedure: in alkaline medium ammonium ions react with chlorine to form chloroamine which in the presence of a catalyst forms a blue coloured indophenol with phenols.
Primary amines react like ammonium ions resulting in high results.
Chlorine-consuming substances can lower the result or even inhibit the reaction depending on their concentration.
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| Data and ordering information |
| Cat. No. |
914 238 |
| Type |
refill pack |
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Range
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0 0.2 0.5 1.0 2.0 5.0 10 mg/l NH4+
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| Sufficient for |
100 determinations |
| Shelf life |
at least 18 months |
| Sea water suitability |
yes, after dilution 1:10
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| Detectable with PF-11 |
yes |
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Ammonium ions occur primarily in domestic waste waters, but frequently also in industrial waste waters. In surface and ground waters ammonium ions indicate decomposition of animal or vegetable substances. Control of the ammonium values is therefore important to the water supply.
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