I
Preferred Water Chemistry Reading
Minimum Ideal Maximum
Free Chlorine
0 0.5 - 3.0
ppm
5.0
ppm
Combined Chlorine
0
0 ppm 0.2
ppm
pH
7.2
7.4
- 7.6
7.8
Total Alkalinity
40
ppm
80
ppm
120
ppm
Calcium Hardness
50
ppm
100
- 250
ppm
350
ppm
Stabilizer (Cyanuric Acid)
10
ppm
20
-
40
ppm
50
ppm
Consult with local swimming pool dealer for water treatment.
Free Chlorine • Is the chlorine residual present
in
pool water.
Combined
Chlorine•
Is formed by the reaction
of
free chlorine with ammonia wastes.
Result
if
too high - Sharp chlorinous odor, eye irritation.
pH.
A value that indicates how acidic
or
basic a solution is.
Result if too low -
Corroded metals, eye
& skin irritation, destruction
of
total alkalinity.
Result
if
too high -
Scale formation, cloudy water, shorter filter runs,
eye
& skin irritation, poor chlorine efficiency.
Total Alkalinity -
Indicates the degree
of
the water's resistance to change in pH.
It determines the speed and ease
of
pH change, so always adjust total
alkalinity before adjusting the pH level.
Result if too low - Corroded metals, eye
& skin irritation. Low alkalinity
will cause the pH to be unstable. Any chemical
added to the water will have
an
affect
on
pH.
Result if too high -
Scale. formation, cloudy water, eye
& skin
irritation, poor chlorine efficiency.
Calcium Hardness -
Refers to the amount
of
calcium and magnesium dissolved
in
the water.
Result
if
too high - Eye & skin irritation, difficulty balancing water and
poor chlorine efficiency. Scale will form and will
cause the water to become cloudy.
Stabilizer•
Stabilizers extend the life
of
chlorine in swimming pools.
(Cyanuric Acid)
•
Do
not add pool chemicals directly
to
the skimmer. This
may
damage
the
cell.
• Maintaining a
salt
and
sanitizer level above
the
recommended range
can
contribute
to
the
corrosion
of
the
pool equipment.
•
Check
the
expiry
date
of
the
test kit
as
the
test
results
may
be
inaccurate
if
the kit is used
after
that date.
• If,
due
to
heavy
pool usage,
it
is required to increase the sanitizer level, then use a chemical
based
on
trichlor,
TCCA
or
dichloro.
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