| VISOCOLOR® Chromate |
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Determination of chromate
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In sulphuric acid chromate ions react with diphenylcarbazide to form a red-violet dye. Larger amounts of heavy metals interfere with the test.
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| Data and ordering information |
| Cat. No. |
914 211 |
| Type |
refill pack |
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Range
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0.1 0.2 0.3 0.5 1.0 2.0 mg/l CrO42–
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| Sufficient for |
100 determinations |
| Shelf life |
at least 3 years |
| Sea water suitability |
yes |
| Detectable with PF-11 |
yes |
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Chromium compounds can be present in industrial waste waters in trivalent form [chromium(III) ions] and in hexavalent form (chromate and dichromate ions). In order to determine the total chromium all other valencies must be oxidised to chromium(VI). Each test kit comes with a detailed description.
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