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

- SUITABLE FOR - Checking the water quality of Hot Tubs, Swimming Pools, Ponds and Spas. - 3-IN-1 USAGE - Tests levels of 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. - LARGE QUANTITY - Supplied in a pack of 50 which should allow you to test the water multiple times a week through the summer season. - MULTI-PACK - Pack of 6 x 50 test strips.