Easily maintain the perfect water quality for your pool, hot tub, or spa with Shatchi Blue Sparkle 3-in-1 Dip Test Strips. These convenient strips provide a quick and simple way to measure key water parameters, including chlorine, pH, and alkalinity. By indicating the precise chemical balance, these strips help you prevent the growth of harmful bacteria and ensure a safe, enjoyable swimming experience. To use, simply dip a strip into the water, remove immediately, and hold level for 15 seconds. Compare the results to the easy-to-read colour chart on the back of the packet to understand your water's needs. Tested and approved to UK guidelines, Shatchi dip test strips offer reliable and accurate results for effortless water care. Summary: Shatchi Blue Sparkle dip test strips for pool, hot tub, and spa water testing. Measures chlorine, pH, and alkalinity. Easy to use with a colour chart. 25 strips per pack. UK approved quality.