This requires a test set, often combined with a chlorine tester. Use this test set to determine the pH value and chlorine concentration in the swimming pool water. Easy-to-read colour scales guarantee the right reading.
At a low pH value, correction uses PH PLUS.
At a low pH value, correction uses PH MINUS.
Correction must always be carried out before other products are added. Testing must be carried out at least once a week.
If you require further information, then contact our Starline sales team.