3-in-1 Chlorine, PH & Alkalinity Test Strips x50 Strips - Pack of 6 DL108

3-in-1 - Tests Chlorine, PH & Alkalinity of water. Easy Colour Match System - Dip the water quality testing strip fully into the water, remove and hold horizontally then read against the coloured chart on the side of the bottle in 30 seconds. Supplied in a pack of 50 which should allow you to test the water multiple times a week through the summer season. Perfect for checking the water quality of Hot Tubs, Swimming Pools, Ponds and Spas. Pack of 6 x 50 test strips.