1
Trick to Remember Causes of Permanent Hardness - PCS
To remember the chemicals that cause permanent hardness, simply remember the abbreviation - PCS (or you can read it as 'Picks').
P - Permanent hardness
C - Chloride of magnesium and calcium
S - Sulfate of magnesium and calcium
To remember the chemicals that cause permanent hardness, simply remember the abbreviation - PCS (or you can read it as 'Picks').
P - Permanent hardness
C - Chloride of magnesium and calcium
S - Sulfate of magnesium and calcium