Testing the chlorine in your pool or spa… |
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We are interested in how much available chlorine there is in the water – chlorine that can act on foreign substances in the water to keep the pool clean and safe for the swimmers. Too little chlorine results in algal and bacterial growth, waterborne illnesses, cloudy water and insufficient sanitation of the water. Too much chlorine can result in eye, nose and skin irritations. Remember, too, that the chlorine in the pool is carcinogenic and we should aim to keep its level to the minimum required for complete disinfection. Test kits which use tablets rather than liquid reagents are preferred. The tablets are easier to use and provide more accurate results. Also make sure that the chlorine measuring tablets are “DPD” as only these can measure the free available chlorine. Take the water sample from at least 20-30 cm below the surface and at least that far from the wall of the pool. Test the water according to the test kit’s instructions. The desirable level of available chlorine in the pool is 1.0-3.0ppm with 2.0ppm being the recommended ideal. |