Procedures :
1. Test kit : rainbow lifeguard test kit for pool and spa or equivalent.
2. Fill test cell to line with pool water taken from a depth of 18” (away from return line).
3. Add 5 drops of pH solution to pH test cell.
4. Add 5 drops of OTO solution to CL test cell.
5. Place cover over both test cell openings and invert several times to mix.
6. Compare each test cell to its respective colour standards.
Leal reading : pH 7-4 – 7.6
CL 1.0 – 1.5
7. Do not dispose of test samples in pool.
8. Rinse test set thoroughly after each use.
9. Store test set in a cool, dark place.
10. Replace all reagent solutions once a year for accurate testing.
11. If chlorine below standard, add chlorine about 1-2 kg.
12. If pH below 7.2, add soda ash, if above 7.6 add hydrochloride acid.