Features: 7-in-1 Testing: Our pool and spa test strips kit includes 100 premium test strips that accurately measure 7 different parameters, including hardness, alkalinity, chlorine, and pH levels, making it easy to maintain optimal water quality. Quick & Accurate Results: Our accurate testing strip water quality testing kit provides fast and precise results, so you can quickly identify any issues and take action to keep your pool or spa in top condition. Easy to Use: Our pool test strips are designed for easy use, with clear instructions and color-coded results that make it simple to interpret your water quality levels. Plus, our spa and hot tub test strips are suitable for use with any type of water maintenance system. Premium Quality: Our fast and accurate hard water quality testing strips are made from premium quality PET that provide reliable and consistent results, so you can trust that your water is safe and clean. Convenient: Our pool and spa test strips come in a handy kit, making it easy to keep everything you need for water testing in one place. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Shelf life: 1 year Material: PET Test time: 30s Accuracy: 99% Test items: Hardness, total alkali, cyanuric acid, total chlorine, residual chlorine, residual bromine, pH Storage conditions and shelf life: 1. Storage conditions: Store in a dry place at 2 to 30 away from light (stored at 2 to 8 ). 2. Product shelf life: Store in a dry place at 2 ~30 away from light, with a shelf life of 12 months. 3. Shelf life of bottle opening: After opening, the cylinder cover needs to be sealed and stored in a dry place at 2 ~30 away from light. Please use it as soon as possible. Sample requirements: 1. Take 5-10ml of the sample and let it stand. Take the supernatant for testing. 2. The test is conducted at a room temperature of around 25 . Inspection method: 1. Immerse the reaction area of the test strip into the solution to be tested for 1-2 seconds, remove the test strip, scratch the edge of the test strip along the wall of the solution container, and drain any excess water from it. 2. After 30 seconds, compare the reaction zone of the test strip with the color of the colorimetric card to determine the test value of the solution to be tested. 3. The colorimetric time should be controlled within 60 seconds, as too long or too short a time can affect the reading. Matters need attention: 1. When removing the test paper, do not touch the reaction end of the test paper to avoid contaminating it and affecting the test results. 2. After removing the required number of test strips, seal and store the remaining test strips in a dark place. 3. The liquid to be tested should be kept colorless or light colored as much as possible. Before testing for excessively dark colored liquids, activated carbon adsorption can be used for dehydration treatment. If the liquid to be tested is relatively turbid, let it stand for a period of time, and then take the clear part for testing after settling. 1 Bottle * Test Strips (100pcs inside)