Sealey Dellonda 3-in-1 Chlorine, PH & Alkalinity Test Strips x50

- PERFECT FOR MAINTAINING WATER QUALITY - Ideal for checking the water quality of Hot Tubs, Swimming Pools, Ponds and Spas. - 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. - SUITABLE FOR - Can be used for both inflatable Hot Tubs & Pools - LONG-LASTING PACK - Supplied in a pack of 50 which should allow you to test the water multiple times a week through the summer season.