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| NANOCOLOR® Residual Hardness 1 |
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| Photometric determination of hardness |
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Calcium and magnesium ions react in alkaline solution with phthalein purple to form a violet dye.
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| Data and ordering information |
| Cat. No. |
985 084 |
| Type |
tube test 0-84 |
| Range |
0.02 – 1.00 °d
0.004 - 0.180 mmol/l |
| Sufficient for |
20 determinations |
| Shelf life |
at least 1 year |
| Sea water suitability |
no |
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