7-IN-1 COMPLETE TESTING - These swimming pool test strips are designed to measure all necessary parameters, including Hardness, Total Alkalinity, Cyanuric Acid, Total Chlorine, Free Chlorine, Bromine and pH. These 7 tests provide all the information you need to keep your pool water clear.ENJOY EVERY MOMENT WITH WATER - Relax into your pool or spa's sparkling clean water. 7-IN-1 Pool Test Strips are widely used in swimming pools, spa, hot tubs, bathroom and other water chemistry tests. Test your pool water regularly, allows you and your loved one stay away from unclean and harmful water.FAST & ACCURATE TO TEST - Our strips are made of high-quality fiber paper and non-color bleeding plastic pad, faster and simpler than liquid testing kits. Just dip a strip into water for 2 seconds; Place it horizontally for 15 seconds and compare with the color chart on the bottle over the next 30 seconds to assure accurate results. Ideal range marked on the bottle.AFFORDABLE 100 STRIPS - Each test kit contains 100 strips, which can perform 100 tests on your water. Save time, money and avoid hassle while knowing with confidence your water is balanced and safe. 7-in-1 Test Strips can be last for 12 months if they are stored in cool condition and away from light.SOLUTION WITHIN 24 HOURS - Our team is committed to the pursuit of 100% customer satisfaction. If you run into issues or have any questions, simply contact us and we will try our best to help you. Refund or Replacement for any defective products No Questions Asked!