TESPERT Spa and Hot Tub Test Strips Spring and Pool Test Strips 4-in-1 125 Strips Pack, Hot Tub Chemistry Test Kit for Free Chlorine, Bromine, pH and Total Alkalinity

? About TESPERT ? TESPERT Always Be Your Private Test Expert. We have professional Research and Development Center, efficient factory and on-line customer service, help you monitor the surrounding water environment and protect your health with the most effective and fast way.   ? Why You Need It  ? Is the pool, spa or hot tub water really safe? Chemical elements in pool, spa, hot tub water could cause asthma in children and cause dry skin. Excessive levels of chemical elements in the water can also damage enamel, eyes and hair. Therefore, it is very important for you to test your pool, spa or hot tub before you enjoy it. TESPERT test strips is the most convenient and effective way to check your water. Accurate test results can be obtained without any experience. Save the expensive tests, a few bucks will help you check the water at all times. So place the order now!   ? How It works ? Tespert Pool and Spa 4 in 1 Test Strips is a great choice in water check, one trip shows four test results in 30 seconds. You will clearly know the free chlorine, bromine, pH and total alkalinity levels of water. The whole set contains 125 strips in total. There are three (2 in 1) color blocks on each test strip, each block checks a different condition of the water. Kit indicates the conditions of the water by changing color.   ??  Instructions ?? Simple1.Dip the test strips into water for 2 seconds and remove it. Fast2.Hold the strip horizontally for 15 seconds. Do NOT shake excess water off for avoiding color mixing . Accurate3.Compare against the color chart and read immediately within 30 seconds to get exact results.