6
Test 5
PHMB (POLYBIGUANIDE-BASED BIOCIDE)
Range 0 - 100 mg/l (ppm)
Yellow - Green - Blue
PHMB is the generic name for various polybiguanide-based swimming pool biocides.
These biocides are normally sold under branded product names, for example
Baquacil* (Zeneca), Softswim* (Biolab), Revacil* (Mareva) and Nicosil* (NICO Norge).
Commercial products normally contain 20% active PHMB. This test has been
calibrated for the management of pools using commercial products of this strength.
A factor will need to be applied if products of a different strength are being used.
(*AII trade marks acknowledged).
1 Fill test tube with sample to the 10 ml mark.
2 Add one PHMB PHOT tablet, crush and mix to dissolve.
3 Take photometer reading immediately.
Test 6
pH VALUE
Range 6.8 - 8.4
Yellow - Red
1 Fill test tube with sample to the 10 ml mark.
2 Add one PHENOL RED tablet, crush and mix to dissolve.
3 Take photometer reading.
Test 7
ALKALINITY (TOTAL ALKALINITY)
Range 0 - 500 mg/l (ppm)
Yellow - Green - Blue
1 Fill test tube with sample to the 10 ml mark.
2 Add one ALKAPHOT tablet, crush and mix thoroughly. Ensure all of the
particles have dissolved completely.
3 Stand for one minute.
4 Take photometer reading.
