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Pool Operator Exam Study Guide Solutions

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Pool Operator Exam Study Guide Solutions whole range chlorine in a pool: ____ to _____ - ANSWER-1, 5 ideal range chlorine in a pool: ____ to _____ - ANSWER-2, 4 whole range chlorine in a spa: ____ to _____ - ANSWER-2, 10 ideal range chlorine in a spa: ____ to _____ - ANSWER-3, 5 4 types of sol...

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  • November 11, 2024
  • 9
  • 2024/2025
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Pool Operator Exam Study Guide Solutions


whole range chlorine in a pool: ____ to _____ - ANSWER✔✔-1, 5


ideal range chlorine in a pool: ____ to _____ - ANSWER✔✔-2, 4


whole range chlorine in a spa: ____ to _____ - ANSWER✔✔-2, 10


ideal range chlorine in a spa: ____ to _____ - ANSWER✔✔-3, 5


4 types of solid chlorine - ANSWER✔✔-calcium hypochlorite, lithium hypochlorite, trichlor, dichlor


liquid chlorine - ANSWER✔✔-sodium hypochlorite (NaOCl)


how active is gas chlorine - ANSWER✔✔-100%


the active killing form of chlorine in water - ANSWER✔✔-hypochlorous acid (HOCl)


HOCl = ______ - ANSWER✔✔-H+ (hydrogen ion) + OCl- (hypochlorite ion)


most common granular chlorine (pH range) - ANSWER✔✔-calcium hypochlorite (8.5 - 11, used to super

chlorinate water)


not common form of chlorine due to low active strength (pH) - ANSWER✔✔-lithium hypochlorite (10.8)


tablet/stick chlorine usually used in erosion feeder (pH - what will it do?) - ANSWER✔✔-trichlor (2.8 -

3.5, lower alkalinity and pH over time)


salt used as a disinfectant (pH) - ANSWER✔✔-dichlor (6.7 - common in vinyl lined pools)


most common type of chlorine used (pH) - ANSWER✔✔-sodium hypochlorite (NaOCl - 13)

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______ needs special training to use and has a pH of ____ and will _____ when added to water -

ANSWER✔✔-gas chlorine, 0, lower pH


chlorine is most effective as a pH of _____ - ANSWER✔✔-7.5


active disinfectant in the water - ANSWER✔✔-free chlorine (FC)


FC is determined by the ______ test and is maintained between ____ and ____ ppm - ANSWER✔✔-DPD,

2, 4


equal to the amount of hypochlorous acid (HOCl) and the amt of hypochlorite ions (OCl-) - ANSWER✔✔-

free chlorine (fc)


the result of free chlorine reacting with organic compounds - ANSWER✔✔-combine chlorine (CC)


common name and max for pools and spas for combine chlorine - ANSWER✔✔-chloramines, 0.2, 0.5


CC = - ANSWER✔✔-TC - FC


what will a DPD measure - ANSWER✔✔-TC, FC


how much CC should a pool have ideally - ANSWER✔✔-zero


shocking the pool is also called - ANSWER✔✔-breakpoint chlorination


breakpoint chlorination is the conversion of ________ into ______ - ANSWER✔✔-combine chlorine,

nitrogen gas


breakpoint chlorination equation - ANSWER✔✔-BPC = 10 x CC [BPC = 10 x (TC - FC)]


whole cyanuric acid range: _____ to ______ppm - ANSWER✔✔-0, 100


ideal cyanuric acid range: _____ to ______ ppm - ANSWER✔✔-30, 50

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