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Test 15 Chloride
Range:
0-500mg/l (ppm) NaCl
Colour change: Clear - Cloudy
(turbidimetric method)
1 Take a clean test cuvette. Using the Measuring
Syringe (PT 361) add 1ml of pool water. Fill test
tube to the 10ml mark with deionised water.
2 Add one Acidifying CD tablet,
crush and mix to dissolve.
3 Add one Chloridol tablet and allow to
disintegrate for at least two minutes. A
cloudy solution indicates the presence of chloride.
4 Crush any remaining undissolved tablet,
mix and then take photometer reading.
Test 16 Total Hardness
Range:
0-500mg/l (ppm) CaCO
Colour change: Pale Purple - Purple
1 Fill test tube with sample to the 10ml mark.
2 Add one Hardicol No 1 tablet,
crush and mix to dissolve.
3 Add one Hardicol No 2 tablet, crush
and mix. Ensure all particles are dissolved.
4 Stand for two minutes.
5 Take photometer reading.
Test 17 Aluminium
Range:
0-0.50mg/l (ppm) Al
Colour change: Yellow - Pink
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Aluminium No 1 tablet,
crush and mix to dissolve.
3 Add one Aluminium No 2 tablet,
crush and mix fully to dissolve.
4 Stand for five minutes.
5 Take photometer reading.
Test 18 Nitrate
Range:
Colour change: Colourless - Red
1 Take a clean Nitratest Tube (PT 526). Using
the Measuring Syringe (PT 361) add 1ml of
sample. Fill the Nitratest Tube to the 20ml
mark with deionised water.
2 Add one level spoonful of Nitratest Powder and
one Nitratest tablet. Do not crush the tablet.
Replace screw cap and shake tube well for exactly
one minute then allow contents to settle.
3 Then, either:
Invert tube gently 2 or 3 times and then allow
to stand for at least two minutes to ensure
complete settlement. Remove screw cap and
wipe around top with a clean tissue. Decant
clear solution into test cuvette, filling to the
10ml mark.
or
Using the Palintest Filtration Set (PT 600) filter
3
a portion of the solution through a GF/B filter
paper into a test cuvette filling to the 10ml mark.
4 Add one Nitricol tablet,
crush and mix to dissolve.
5 Stand for 10 minutes.
6 Take photometer reading.
Test 19 Ammonium
Range:
Colour change: Yellow - Green
1 Fill test cuvette with sample to the 10ml mark.
2 Add one Ammonia No 1 tablet and one
Ammonia No 2 tablet, crush and mix to dissolve.
3 Stand for 10 minutes.
4 Take photometer reading.
Test Methods
0-100mg/l (ppm) No
3
0-1.00mg/l (ppm) N
7
19
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