How does it work?
How to carry out regular and easy testing
The Cool Pooltester uses the worldwide recommended DPD test which is used by all the water companies to check chlorine levels in drinking water. Just add one DPD 1 tablet to your water sample. This easy and safe chemistry gives a colour range which is measured by the instrument and you read out the concentration directly on the LCD screen.
In addition to chlorine the Cool Pooltester can measure pH as well as Total Alkalinity, giving fast answers for key pool readings.
Traditional water testing methods
In the past, pool and spa owners have traditionally used Comparators and Liquid Drop Count Kits.
Users had to compare colours against printed or acetate colour blocks, but these only give a very rough guide to the chemical concentration. They depend upon the eyesight of the user and on lighting conditions.
What we offer now is a modern approach; the most accurate and up-to-date means of home pool water testing ever made available to the home user.
Photometer Methods: How do they Work?
Photometers work by passing a beam of light of a specific wavelength through the test sample containing reagents. The amount of light passing through the sample is measured on a photodetector.The photometer converts this reading into the concentration of the parameter being tested. Photometers are more accurate and precise than visual methods of comparison and eliminate errors due to differences in human eyesight.
Photometers: Chemistry and theory
Light consists of radiation to which the human eye is sensitive. Waves of different lengths give rise to light of different colours, while a mixture of light of these wavelengths constitutes white light.
Principle of Photometric Measurement
The Cool Pooltester is an instrument that accurately measures the colour at a closely controlled wavelength of light and converts that to a calibrated value for the chlorine.
Photometers have been used for many years by professional water engineers. The Cool Pooltester is the first photometer for the home user.
