Pool Operator Questions and Answers with complete solution

phenol red - used to measure pH parallel - valves are open if handle is ______ to the pipe pH - how acidic or basic a solution (pool water) is 60 to 180 - acceptable range of Total Alkalinity in a pool 7.2 to 7.8 - acceptable range of pH in a pool 150 to 400 - acceptable range of calcium hardness in a pool 1500 - maximum reading for total dissolved solids (TDS) 7.5 - pH of a human eye 15 minutes - maximum time someone should spend in a spa 8 hours - maximum turnover rate for a main pool 2 hours - maximum turnover rate for a wading pool 30 minutes - maximum turnover rate for a spa 104 - maximum temperature for a spa is _____ degrees-0.5 - +0.5 - acceptable range for the Langelier Saturation Index flow meter - instrument that measures how fast the water is returning to the pool after it has been cleaned parts per million - the rate of flow is measured in... effluent line - other name for return line DPD #1 and #2 - to measure free available chlorine the reagents should be... floculent - filter aid that makes small dirt bigger cyanuric acid - chemical that stabilizes chlorine against ultraviolet light of the sun 1.5 - minimum reading for chlorine in a main pool 3 - minimum reading for chlorine in a wading pool pre-coat - the process of preparing cartridges for a DE filter prior to turning the pump on is called... slurry feed - adding DE to the filter while the pump is running