Visocolor Oxygen



Colorimetric determination of oxygen

Oxygen determination according to Winkler: in alkaline solution dissolved oxygen oxidises manganese(II) ions to higher-valent manganese hydroxides. In a strongly acidic medium these form manganese(III) ions which can be determined either titrimetrically or colorimetrically after addition of a colour reagent.


Data and ordering information

Cat No. 915 009 (915 209)
Type high sensitive titration test kit (refill pack)
Range 1 syringe is sufficient for the determination of 0.2 – 10.0 mg/l O2
1 gradation mark = 0.2 mg/l O2
Sufficient for 100 tests with an average oxygen content of 9 mg/l
Shelf life at least 18 months
Sea water suitability yes
Detectable with PF-11 no


The solubility of oxygen in water depends on the temperature, the pressure and the other components of the water. The oxygen content of a water at the time of sampling is often quoted as the percentage of the possible saturation.

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