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| NANOCOLOR® Chromate |
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| Photometric determination of chromate |
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Photometric determination with diphenylcarbazide.
In acidic medium, chromate ions react with diphenylcarbazide to form a red-violet colour complex.
Chromium(III) ions are not determined unless they are converted to Cr(VI) by silver-catalysed oxidation with ammonium peroxodisulphate/
sulphuric acid.
Reaction basis analog DIN EN ISO 18412
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| Data and ordering information |
| Cat. No. |
918 25 |
| Type |
standard test 1-25 |
| Range |
10 mm cuvette:
0.1 - 6.0 mg/l CrO42- / 0.1 - 3.0 mg/l Cr(VI)
50 mm cuvette:
0.01 - 1.00 mg/l CrO42- / 0.01 - 0.45 mg/l Cr(VI) |
| Sufficient for |
250 determinations |
| Shelf life |
at least 2 years |
| Sea water suitability |
yes |
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