Palintest Water Test Reagents - Hardness Yes/No Tablets - 250 tablets in box

Palintest Water Test Reagents - Hardness Yes/No Tablets

250 tablets in a box

Water hardness is caused by the presence of calcium and magnesium ions. Hardness prevents the formation of lather with soap, and can cause scaling in water systems. Ion-exchange softeners are widely used for the removal of hardness in both domestic water systems and industrial applications.

The Palintest Hardness Yes/No test provides a simple control test for industrial and domestic water softeners. The test will demonstrate whether the water has been properly softened or whether the softener bed requires regeneration or replacement.

Calcium and magnesium ions are complexed by reaction with ethylene diamine-tetraacetic acid (EDTA). Excess calcium and magnesium ions react with a specific indicator to produce a distinctive coloration. The Palintest Hardness Yes/No test uses a tablet reagent containing a standardised amount of EDTA with screened eriochrome black as indicator. The test produces a distinctive red or green colour indication depending on whether the water is above or below a designated hardness control limit.