【Water Quality Safety Guarantee】 The 7 in 1 test strips kit is specially designed for pool hot tubs jacuzzi and spa, which can provide fast and reliable results to verify water quality. It can detect 7 elements in the swimming pool at one time, such as total hardness, free chlorine, bromine, total chlorine, cyanuric acid, total alkalinity and pH. 【Widely Application】 These test strips are widely used in swimming pools, spa, bathrooms, hot tubs and other water chemistry tests. It is a good helper to detect water quality quickly and accurately. Research shows that your swimming pool should be tested at least twice a week to give you an accurate understanding of the water condition. our test strip allows you and your children to be surrounded by clean and harmless water. 【Easy to Use and Read】 Immerse the test strips into the water and take it out after 2 seconds. Place it horizontally for 15 seconds and compare with the color chart on the bottle. It is necessary to complete the reading within 30 seconds to obtain accurate water quality results. 【Easy to Use and Read】 Immerse the test strips into the water and take it out after 2 seconds. Place it horizontally for 15 seconds and compare with the color chart on the bottle. It is necessary to complete the reading within 30 seconds to obtain accurate water quality results. 【Sealed Package】The airtight bottle is equipped with 100 test strips, which can perform 100 tests on your water. After each test strip is taken, the bottle cap should be tightened in time to prevent the test strip from being contaminated by water. KAPASKI 7 IN 1 Pool Test Strips Product Introduction Pool test strips is the optimum test kit, One test strip can detect 7 important elements. In just one minute, you will know the total hardness, free chlorine, bromine, total chlorine, cyanuric acid, total alkalinity and pH value of the water. Multi-usage: The test strips suit for pool, hot tub, spa Aslo it work to frenshwater, saltwater. The pool test strips allows you and your children to be surrounded by clean and harmless water. Carefree laughing and playing. Steps for usage 1. Immerse the strip for 2 seconds and then remove the strip. 2. Do not shake excess water off, and then hold the strip horizontally for 15 seconds. 3. Compare against the color chart and read immediately within 30 seconds to get accurate readings. Friendly Notes: 1. Do not put wet hands into the bottle. 2. Do not touch or contaminate the test area of the test paper with your hands. 3. After removing the strip, close the lid tightly. 4. For best results read in natural daylight. 5. Store in a cool dry place. Package Includes 100Pcs Pool Test Strips