whole range chlorine in a pool: ____ to _____ - ANS 1, 5
ideal range chlorine in a pool: ____ to _____ - ANS 2, 4
whole range chlorine in a spa: ____ to _____ - ANS 2, 10
ideal range chlorine in a spa: ____ to _____ - ANS 3, 5
4 types of solid chlorine - ...
most common granular chlorine (pH range) - ANS calcium hypochlorite (8.5 - 11, used to
super chlorinate water)
not common form of chlorine due to low active strength (pH) - ANS lithium hypochlorite
(10.8)
tablet/stick chlorine usually used in erosion feeder (pH - what will it do?) - ANS trichlor (2.8
- 3.5, lower alkalinity and pH over time)
salt used as a disinfectant (pH) - ANS dichlor (6.7 - common in vinyl lined pools)
most common type of chlorine used (pH) - ANS sodium hypochlorite (NaOCl - 13)
______ needs special training to use and has a pH of ____ and will _____ when added to water
- ANS gas chlorine, 0, lower pH
chlorine is most effective as a pH of _____ - ANS 7.5
, active disinfectant in the water - ANS free chlorine (FC)
FC is determined by the ______ test and is maintained between ____ and ____ ppm - ANS
DPD, 2, 4
equal to the amount of hypochlorous acid (HOCl) and the amt of hypochlorite ions (OCl-) - ANS
free chlorine (fc)
the result of free chlorine reacting with organic compounds - ANS combine chlorine (CC)
common name and max for pools and spas for combine chlorine - ANS chloramines, 0.2,
0.5
CC = - ANS TC - FC
what will a DPD measure - ANS TC, FC
how much CC should a pool have ideally - ANS zero
shocking the pool is also called - ANS breakpoint chlorination
breakpoint chlorination is the conversion of ________ into ______ - ANS combine chlorine,
nitrogen gas
breakpoint chlorination equation - ANS BPC = 10 x CC [BPC = 10 x (TC - FC)]
whole cyanuric acid range: _____ to ______ppm - ANS 0, 100
ideal cyanuric acid range: _____ to ______ ppm - ANS 30, 50
acts as a protection for chlorine compounds from UV light - ANS cyanuric acid
CyA will act as a stabilizer for _______ but does not
stabilize ________ - ANS free chlorine, bromine
The only way to reduce CyA concentration is to _______ - ANS dilute the water and
replace it
whole range of bromine: ____ to _____ - ANS 2, 10
ideal range of bromine: _____ to ______ - ANS 4, 6
second most common disinfectant in the pool - ANS bromine
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