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| Dissolved oxygen reacts in an alkaline environment with manganese(II) ions by forming manganese hydroxides with higher valences, of which the composition varies. In a highly acidic environment these form manganese(III) ions, which free from the added iodide solution a quantity of iodine equivalent to the dissolved oxygen. The resulting iodine is titrated with thiosulphate. |
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| Reporting limit: | 0.5 mg/l, matrix dependent |
| Measurement uncertainty: | 25% |
| Sustainability: | 7 days
|
| Sampling bottle: | Glass
, white
, 100 ml
(fill up to cap)
|
