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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. (Reaction basis according to DIN 38406-E5)

REF

931 010 (931 210)

Type

colorimetric test kit (refill pack)

Range

0 · 0.5 · 1 · 2 · 3 · 5 · 7 · 10 · 15 mg/l NH4+

Sufficient for

50 determinations

Shelf life

at least 1.5 years

Sea water suitability

yes, after dilution (1+9)

Detectable with PF-12

yes

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.