1. Fast and reliable results: Our swimming pool test strips are specially designed for pool and spa water, which provide accurate and clear readings without colour bleeding. This allows you to quickly measure the of your pool or spa water. You can easily test anytime, anywhere, without incurring expensive costs and saving your time. 2. 7 way pool test strips: Our 50 pool test strips monitor seven important water quality parameters in one strip, including and total chlorine, total hardness, pH value, total alkalinity, cyanuric acid and bromine. Monitor your pool and spa crystal clear and y effortlessly. 3. Accurate and fast testing: simply immerse in water for 2 seconds; then remove, do not shake off excess water and hold the test strip horizontally for 30 seconds; compare with the colour chart on the bottle to get clear and accurate water quality results. 4. For the of your family: the pool water quality directly affects our and can cause discomfort, so it is very important to test the pool water quality. It is recommended to test at least twice a week to keep your pool clean and .