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Test 17 ALUMINIUM
Range 0 - 0.50 mg/l (ppm)
Method: Eriochrome Cyanine R Indicator
Yellow - Pink
1
Fill test tube with sample to the 10 ml mark.
2
Add one
Aluminium No 1
tablet, crush and mix to dissolve.
3
Add one
Aluminium No 2
tablet, crush and mix gently to dissolve. Avoid
vigorous agitation.
4
Stand for five minutes.
5
Take photometer reading.
Reagents: Aluminium No 1 and No 2 Re-Order Code: AP 166
Test 18 NITRATE
Range 0 - 100 mg/l (ppm)
Method: Indicator Colourless - Red
1
Take a clean Nitratest Tube (PT 526). Using the Measuring Syringe
(PT 361) add 1 ml of sample. Fill the Nitratest Tube to the 20 ml 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 tube, filling
to the 10 ml mark.
or
Using the Palintest Filtration Set (PT 600) filter a portion of the solution
through a GF/B filter paper into a test tube filling to the 10 ml mark.
4 Add one
Nitricol
tablet, crush and mix to dissolve.
5
Stand for 10 minutes.
6
Take photometer reading.
Reagents: Nitratest Powder, Nitricol and Nitratest Tablets
Re-Order Code: AP 163
Содержание Pooltest 25
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