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Certified Pool Operator (CPO) Exam Expected Questions and Answers (Verified Answers)
- used to measure pH
Ans: phenol red
- valves are open if handle is to the pipe
Ans: parallel
- how acidic or basic a solution (pool water) is
Ans: pH
- acceptable range of Total Alkalinity in a pool
Ans: 60 to 180 1 / 2
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- acceptable range of pH in a pool
Ans: 7.2 to 7.8
- acceptable range of calcium hardness in a pool
Ans: 150 to 400
- maximum reading for total dissolved solids (TDS)
Ans: 1500
- pH of a human eye
Ans: 7.5
- maximum time someone should spend in a spa
Ans: 15 minutes
- maximum turnover rate for a main pool
Ans: 8 hours
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