 |
| VISOCOLOR® ECO Chromium |
| Colorimetric determination of chromium (VI) |
 |
In sulphuric acid chromate ions react with diphenylcarbazide to form a red-violet dye.
(Reaction basis according to DIN EN ISO 7393 G4-2) |
| Data and ordering information |
| REF |
931 020 (931 220) |
| Type |
colorimetric test kit (refill pack) |
| Range |
0.02 · 0.05 · 0.10 · 0.15 · 0.20 · 0.30 · 0.40 · 0.50 mg/l Cr(VI) |
| Sufficient for |
140 determinations |
| Shelf life |
at least 1.5 years |
| Sea water suitability |
yes |
| Detectable with PF-12 |
yes |
|
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 is equipped with a detailed
description. |