| VISOCOLOR® HE Total Hardness H 20 F |
| Titrimetric determination of total hardness |
 |
Complexometric titration in accordance with DIN 38406 E3 and DIN 38409 H6.
Copper(II) ions can delay or (in higher concentrations) even block the color change of the indicator. For this reason allow enough water to run through copper pipes prior to sampling.
|
| Data and ordering information |
| REF |
915 005 (915 205) |
| Type |
titration test kit (refill pack) |
| Range |
0.5 – 20.0 °d or 0.1 – 3.6 mmol/L Ca2+
1 gradation mark = 0.5 °d = 0.1 mmol/L Ca2+ |
| Sufficient for |
about 200 tests with an average hardness of 10 °d or 1.8 mmol/L Ca2+ |
| Shelf life |
at least 1.5 years after production |
| Sea water suitability |
yes, after dilution (1+29) |
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