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CALDUR® Sulfite Test Set – Colorimetric
What is sulfite measured for?
Sulfite (SO₃²⁻) is used in water treatment as an oxygen scavenger to
prevent corrosion in steam boilers, heating systems, and closed cooling systems.
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CALDUR® Residual Hardness Test Set RG 100 – Limit Value Method
What is residual hardness measured for?
Residual hardness is a crucial parameter in the monitoring of water softeners and
ion exchangers.
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CALDUR® copper test set – colorimetric What is copper used to measure? Copper (Cu) is an essential trace element, but can be harmful to health in elevated concentrations. The limit for drinking water is 2 mg/l (Drinking Water Ordinance). Copper enters drinking water primarily through copper pipes, especially in soft, acidic water with a low pH value.
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