MN NANOCOLOR® Tube Test Chromate 5
Description
Photometric determination of chromate.
• Photometric determination with diphenyl-carbazide.
• In acidic medium, chromate ions react with diphenylcarbazide (lyophilised in the tube test) 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.
• Type: tube test 0-24
• Range: 0.1 - 4.0 mg/l CrO42-; 0.05 - 2.00 mg/l Cr(VI); when using semi-micro cuvettes 50 mm (Cat. No. 919 50): 0.01 – 1.00 mg/l CrO42-; 0.005 – 0.500 mg/l Cr(VI).
• Sufficient for: 20 determinations
• Sea water suitability: yes
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