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7
Test Methods
Test 8 Calcium Hardness
Range:
Colour change: Violet - Orange
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Calcicol No 1 tablet,
crush and mix to dissolve.
3 Add one Calcicol No 2 tablet,
crush and mix to dissolve.
4 Stand for two minutes.
5 Take photometer reading.
Note: this method is calibrated for standard
pools. For saltwater/seawater pools, please
use Test 34 Calc.Hard.Salt.
Test 9 Cyanuric Acid
Range:
Colour change: Clear - Cloudy
Note: Cyanuric acid is also commonly referred
to as 'Chlorine Stabiliser' or 'Pool Conditioner'.
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Cyanuric Acid tablet. DO NOT
CRUSH. Allow to disintegrate for at
least two minutes. A cloudy solution
indicates the presence of cyanuric acid.
3 Crush any remaining undissolved tablet,
mix fully and take photometer reading.
Test 10 Iron/1
Range:
Colour change: Colourless - Pink
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Iron LR tablet,
crush and mix to dissolve.
3 Stand for one minute.
4 Take photometer reading.
Test 11 Copper-Free/5
Range:
Colour change: Colourless - Purple
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Coppercol No 1 tablet,
crush and mix to dissolve.
3 Take photometer reading.
18
0-500mg/l (ppm) CaCO
3
0-200mg/l (ppm) CNA
(turbidimetric method)
0-1.00mg/l (ppm) Fe
0-5.00mg/l (ppm) Cu
Test 12 Copper-Total/5
Range:
0-5.00mg/l (ppm) Cu
Colour change: Colourless - Purple
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Coppercol No 1 tablet and one
Coppercol No 2 tablet, crush and mix to dissolve.
3 Take photometer reading.
Note: The Copper-Total/5 is also available as a
Follow-On Test from Test 11 Copper-Free/5
Test 13 Salt/10,000
Range:
0-10,000mg/l (ppm) NaCl
Colour change: Clear - Cloudy
(turbidimetric method)
1 Take a clean dilution tube (PT 512).
Using the Measuring Syringe (PT 361) add
0.5ml of pool water. Fill to the 100ml mark
with deionised water, cap and mix.
2 Fill test tube to the 10ml mark
with diluted solution.
3 Add one Acidifying CD tablet,
crush and mix to dissolve.
4 Add one Chloridol tablet, and allow to
disintegrate for at least two minutes. A
cloudy solution indicates the presence of salt.
5 Crush any remaining undissolved tablet,
mix and take photometer reading.
Test 14 Sulphate
Range:
0-200mg/l (ppm) SO
Colour change: Clear - Cloudy
(turbidimetric method)
1 Fill test tube with sample to the 10ml mark.
2 Add one Sulphate tablet, crush and mix
to dissolve. A cloudy solution indicates
the presence of sulphate.
3 Stand for five minutes then mix again.
4 Take photometer reading.
4
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