Enjoy your pool and SPA: keep your water clean, healthy and pleasant with our 7 in 1 SPA and pool strips to evaluate hardness, alkalinity, pH, free and total chlorine level, bromine level and cyanuric acid level. Speed and simplicity: our spa and pool strips make it easy to maintain your equipment. Simply immerse them in the water to get a result in just a few seconds. With the help of this, you can then make the necessary adjustments. Reliable results: it has never been easier to evaluate the chlorine level of your pool or spa. A full colour chart appears on the bottle containing the spa strips. This way you get reliable and accurate results. 100 strips: get more for your money with our bottles each containing 100 spa and pool strips. At the rate of one use per week, this test kit will accompany you for up to two years. E-BOOK included: our spa and pool strips come with an E-BOOK that will tell you everything you need to know to get the healthiest and safest water at your home. INSTRUCTIONS for use: 1) immerse the test strip in water for two seconds 2) gently shake to remove any excess 3) hold the strip horizontally for 30 seconds to obtain reliable measurement 4) compare colors to color chart. The ideal level is indicated on the bottle. Review results within 30 seconds to ensure accuracy. Storage instructions: 1) avoid touching the test area and ensure that no impurities are present 2) close the vial tightly between each use 3) store the vial in a cool, dry place 4) do not remove the desiccant bag 5) until the vial has been opened, the strips can be used for two years from the date of manufacture indicated at the bottom of the package. Once the vial is opened, the strips must be used within 90 days