Pool Operator's Test Q&A with Verified
Answers (2025).
phenol red ~CORRECT ANSWER~✓✓used to measure pH
parallel ~CORRECT ANSWER~✓✓valves are open if handle is ______ to
the pipe
pH ~CORRECT ANSWER~✓✓how acidic or basic a solution (pool water)
is
60 to 180 ~CORRECT ANSWER~✓✓acceptable range of Total Alkalinity in
a pool
7.2 to 7.8 ~CORRECT ANSWER~✓✓acceptable range of pH in a pool
150 to 400 ~CORRECT ANSWER~✓✓acceptable range of calcium
hardness in a pool
1500 ~CORRECT ANSWER~✓✓maximum reading for total dissolved
solids (TDS)
7.5 ~CORRECT ANSWER~✓✓pH of a human eye
, 15 minutes ~CORRECT ANSWER~✓✓maximum time someone should
spend in a spa
8 hours ~CORRECT ANSWER~✓✓maximum turnover rate for a main
pool
2 hours ~CORRECT ANSWER~✓✓maximum turnover rate for a wading
pool
30 minutes ~CORRECT ANSWER~✓✓maximum turnover rate for a spa
104 ~CORRECT ANSWER~✓✓maximum temperature for a spa is _____
degrees
-0.5 - +0.5 ~CORRECT ANSWER~✓✓acceptable range for the Langelier
Saturation Index
flow meter ~CORRECT ANSWER~✓✓instrument that measures how fast
the water is returning to the pool after it has been cleaned
parts per million ~CORRECT ANSWER~✓✓the rate of flow is measured
in...
effluent line ~CORRECT ANSWER~✓✓other name for return line
Answers (2025).
phenol red ~CORRECT ANSWER~✓✓used to measure pH
parallel ~CORRECT ANSWER~✓✓valves are open if handle is ______ to
the pipe
pH ~CORRECT ANSWER~✓✓how acidic or basic a solution (pool water)
is
60 to 180 ~CORRECT ANSWER~✓✓acceptable range of Total Alkalinity in
a pool
7.2 to 7.8 ~CORRECT ANSWER~✓✓acceptable range of pH in a pool
150 to 400 ~CORRECT ANSWER~✓✓acceptable range of calcium
hardness in a pool
1500 ~CORRECT ANSWER~✓✓maximum reading for total dissolved
solids (TDS)
7.5 ~CORRECT ANSWER~✓✓pH of a human eye
, 15 minutes ~CORRECT ANSWER~✓✓maximum time someone should
spend in a spa
8 hours ~CORRECT ANSWER~✓✓maximum turnover rate for a main
pool
2 hours ~CORRECT ANSWER~✓✓maximum turnover rate for a wading
pool
30 minutes ~CORRECT ANSWER~✓✓maximum turnover rate for a spa
104 ~CORRECT ANSWER~✓✓maximum temperature for a spa is _____
degrees
-0.5 - +0.5 ~CORRECT ANSWER~✓✓acceptable range for the Langelier
Saturation Index
flow meter ~CORRECT ANSWER~✓✓instrument that measures how fast
the water is returning to the pool after it has been cleaned
parts per million ~CORRECT ANSWER~✓✓the rate of flow is measured
in...
effluent line ~CORRECT ANSWER~✓✓other name for return line
