12
Test 34
CALCIUM HARDNESS in Salt Water Pools
Range 0 - 500 mg/l (ppm)) Violet - Orange
1 Fill test with sample to the 10 ml 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.
Test 35
WATER BALANCE
To determine Water Balance Index using the Pooltest 25 Professional Plus, three tests
must be prepared and read using the Water balance test program :
Alkalinity (Alkaphot), Calcium Hardness (Calcicol) and pH (Phenol Red) tests are
required. Prepare the test solutions and proceed as follows :-
1 Select Test 35.
2 Carry out alkalinity test then select ‘Follow on’ from the OPTIONS menu at the
results screen.
3 Carry out the calcium hardness test then select ‘Follow-on’ from the OPTIONS
menu at the results screen.
4 Carry out the pH test then select ‘Follow-on’ from the OPTIONS menu at the
results screen.
5 The Water Balance Index is calculated and is displayed. Consult the chart
below for guidance.
NOTE:
If any of the tests are out of range, the procedure is ended. If an incorrect
reading is taken part-way through the procedure, insert the correct tube then select
‘Read’ from the OPTIONS menu. The new reading will replace the former incorrect
value in the Water Balance Calculation:
