Cool Pooltester, Free Cl/pH/CYA, Palintest SP 164, SP164

Your swimming pool is meant to be enjoyed, but the water must be tested regularly to ensure bather comfort and to protect against dangerous bacteria such as E.Coli.

Traditional pool testing works by taking a sample of water and adding a reagent tablet. The resulting colour then has to be visually compared against a colour chart.

The new state-of-the-art Cool Pooltester works differently: by reading the colour electronically and giving an instant, accurate numerical readout, it eliminates human error and reduces hassle.

The Cool Pooltester uses a similar technology to the photometers used by professionals, but is easy enough for anyone to use.

The Cool Pooltester is yours for just $99, and is available in four versions:

* Chlorine / pH / Alkalinity

* Chlorine / pH / Cyanuric Acid

* Bromine / pH / Alkalinity

* Bromine / pH / Chlorine