Enjoy Crystal Clear and Healthy Pool & Hot Tub & Spa Water: Are you concerned that the levels of certain chemicals(Especially chlorine or bromine) in your pool or spa or hot tub water are too high or too low? Which may cause skin irritation, skin problems, or safety issues for you or your family, especially children. If so, just choose our pool test strips! let everyone enjoy crystal clear and healthy water is the original intention of our birth!4 in 1 Pool Test Kit: Test all necessary parameters for your swimming pool or spa or hot tub at one time, such as pH, Free Chlorine(Bromine), Total Alkalinity & Cyanuric Acid - Very affordable pool test kit combination. Monitoring the water quality at any time you want with our pool water test kit.100 Test Strips: Get more for your money with our pool testing kit. Our bottle contains 100 pool test kits for inground pool or above ground pool, spa, and hot tub. Even two times a week, this pool chemical testing kit will last you up to a year.Quick & Reliable Results: Like the world's top water quality companies, we use the latest medical industry technology. Our spa test strips for hot tub offer comparable accuracy to liquid tests. At the same time, we also use high-quality fiber paper and non-bleeding pad technology, which alleviates the phenomenon of inaccurate tests caused by color interference between adjacent color blocks encountered by most customers, which further improves the accuracy and reliability of our spa test strips.Easy to Use: Just dip in water for 2 seconds; Then take pool testing strips out, and place them horizontally for 15s; Finally, compared with the color table on the bottle to get clear and accurate water quality results.