| VISOCOLOR® ECO Sulphide |
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Colorimetric determination of Sulphide
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N,N-Dimethyl-1,4-phenylene diamine reacts with hydrogen sulphide to form an unstable compound which rearranges to leucomethylene blue. Oxidation with iron(III) ions yields methylene blue.
Thiocyanate and nitrite above 5 mg/l cause low results.
(Reaction principle analogous to APHA 4500-S2-, DIN 38405-D26/27)
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| Data and ordering information |
| Cat. No. |
931 094 (931 294) |
| Type |
colorimetric test kit (refill pack) |
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Range
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0.1 · 0.2 · 0.3 · 0.4 · 0.5 · 0.6 · 0.7 · 0.8mg/l S2–
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| Sufficient for |
90 determinations |
| Shelf life |
at least 36 months |
| Sea water suitability |
yes
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| Detectable with PF-11 |
yes |
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In water sulphides can be present as dissolved hydrogen sulphide or as hydrosulphide or sulphide ions.
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