Help keep the water in your pool or spa fresh by using these easy-to-use test strips to monitor for free chlorine, PH and alkalinity. Just compare the test strip to the easy-to-follow colour guide. Test strips are used to maintain the correct values in pool water. They are used to measure the free chlorine, pH and alkalinity of pool water. Flowclear pool and spa test strips ensure the right chemical balance of your pool or hot tub. With the 3-in-1 test strips you can test: free chlorine content -pH -alkalinity Using the colour indicator system, you know immediately which chemicals to adapt. The strips measure the free chlorine content of 0-10 ppm, the alkalinity of 0-240 ppm and the pH of 6.2 to 8.4 with immediately readable results. The package contains 50 test strips with a shelf life of 18 months. The quality and cleanliness of the water in your swimming pool are the most important factors in maximizing the comfort of the pool and also ensuring its longevity of the pool. That's why regular water quality control pays off, and Flowclear pool spa testing irons are here to make it easy for you. Check the pH level and chlorine content of the water regularly using the test irons to keep up to date with the water situation and, if necessary, be able to react in time by adding a pH control or a chlorine-based disinfectant.