50PCS 6 IN 1 PH Test strips Pool Spa Spa Easy And Fast Detection Of PH details: pool test strips can be used to test pH, total,, total alkalinity, cyanuric, total hardness, etc., with more of features that other test strips and liquid test kits the test paper in water for 2 seconds, leave it in the for about 15 seconds, and then match the color of the tape to the back of the bottle. In just 17 seconds, you can read the data The quality of the pool water should be tested once a week. Our test strips include 100 pool test strips and are divided into 10 separate,, moisture-resistant bags for long-term storage. Measuring 3.9 x 1.6 inches and weighs 1.1 ounces for easy transportation Test strips for pools, spas, spas Test the quality of the water, you can ensure the quality of the water in the pool to avoid health problems and damage to property Notice: 1. The actual color of the item may be slightly different from the images displayed on the website due to many factors such as the brightness of your monitor and the brightness of the light. 2. Allow a slight deviation for the measurement data. 3. There may be an error of 1-3 cm. Package includes: 50PCS 6 IN 1 PH Test strips