Visocolor Iron

VISOCOLOR Iron

Iron

Colorimetric determination of iron

Triazine method: iron(II) ions react with a triazine derivative to form a violet complex. Iron(III) ions are reduced and thus also determined.

 

Data and ordering information

Cat No. 920 040
Type high sensitive test kit
Range 0.0 - 0.01 - 0.02 - 0.03 - 0.04 - 0.05 - 0.07 - 0.10 - 0.15 - 0.20  mg/l Fe
Sufficient for 300 determinations
Shelf life at least 24 months
Sea water suitability no
Detectable with PF-11 no

 

Natural waters as well as waste waters often contain some iron. It can be present as Fe(II) or Fe(III) ions if the pH value of the water is below 3 or if the water is free of oxygen. At higher pH values Fe(III) forms an insoluble oxyhydrate. Frequently the sample is in a transition state with finely dispersed iron oxides. In waste water and natural water containing humic acids iron is often present in the form of a complex salt.The VISOCOLOR® test kits only determine iron which is present in dissolved form as Fe2+ or Fe3+ ions. Iron complexes are not covered unless they are decomposed by oxidation with nitric acid and sulphuric acid.

 
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