Description: Durable Material: Water test is made of high quality materials.Easy to use: Use the water test strips,rinse a small bottle, add a solution, mix and well, and compare value.Easy to carry: Test water quality once a week with the drinking water test strips, even for beginners, drinking water test strips are easy to use. Bring a storage box for easy storage.Use Scenes: aquarium test strips are suitable for testing drinking water, aquariums, fish tanks, pools and spa centers, industrial water, ponds, hot springs.Power Function: Test everything required for water, fish tank pond test strips testing can be used to detect test cl test pH. Specification: Phenol red/red:pH test indicator solutionVolume: 20 mlAdministrative tactic:CL test indicator solutionVolume: 20 ml Size Chart: 32cmx15cm/12.60inchx5.91inch Package Includes: 1 SetWater Test Strips Note: CL,1. Compare the reading and scale values.2. Use numbers to represent the binding amount of cl water.3. In order to effectively treat, the reading should be between 1.0 5 (best)usage:1. Rinse the test small bottle and fill it in the mark with water.2. Add 4 drop of Orto (neighboring tactine) solution.3. Cover the bottle cover and it well.4. Compare the reading and scale values.pH:1. Compare the reading and scale values.2. Use numbers to represent the and alkali of the water.3. For comfortable water and chemical products, the reading should be between 7.2 and 7.6 (best)usage:1. Rinse the test small bottle and fill it in the mark with water.2. Add 4 drop of red phenols solution.3. Cover the bottle cover and it well.4. Compare the reading and scale values.