Lovibond DPD No 3 Test Tablets Chlorine testing DPD Test Tablets - DPD3 is used to test for combined chlorine, which is a measure of the pollution level within the water taking into account the chlorine which is effectively locked in the water trying to burn off. When the combined level rises, you should shock the pool to oxidise off the pollutants. All Lovibond Chlorine Test Tablets have a minimum of 5 years before their expiration date. Please see our beginners guide to chlorine pdf download for further assistance. The tablets come 100 tablets to a box (10 strips of 10 tablets) The tablets are also the latest blister pack technology enabling a simple pop action to remove the tablets. Please remeber it is very important that you DO NOT TOUCH the individual test tablets once they have been popped out of the blister pack, as the contaminants on your fingers could give false readings. The tablet needs to go from the pack straight into your pool tester, which is why these type of tablets are far better than the traditional foil wrapped for ease of use.
