Why you need this test kit Quickly check pool and spa water to keep chemistry in the optimal range (ideal pH about 7.2–7.6; recommended free chlorine about 1.0–1.5 ppm). Prevent skin and eye irritation, reduce algae and bacterial growth, and protect pool equipment by spotting imbalances early. Key benefits Practical and portable: lightweight, compact kit with a storage box makes on-site testing simple and convenient. Fast, easy-to-read results: combined colour chart detector shows pH and residual chlorine in one view so you can see conditions at a glance. Simple procedure for routine checks: minimal handling and clear steps reduce user error and save time. What it does Measures pH and free (residual) chlorine in pool or spa water using a colourimetric tube and combined colour chart. Provides clear, comparable color results to determine whether adjustments are needed to reach the recommended ranges (pH 7.2–7.6; free chlorine 1.0–1.5 ppm). How to use (free chlorine test) 1. Rinse the colourimetric tube with the water you want to test. 2. Add 3 drops of the reagent designated for free chlorine. 3. Close the lid and invert the tube a few times to mix. 4. Compare the resulting colour to the combined pH/residual chlorine chart to read the free chlorine level. Practical details Includes: colourimetric tube(s), reagent(s) for free chlorine, combined pH/residual chlorine colour chart, and a compact storage box for transport and protection. Lightweight and compact design makes this kit easy to store with other pool supplies or carry to the poolside. Typical use scenarios Weekly backyard pool maintenance: perform quick checks before/after use to keep pH near 7.2–7.6 and chlorine at 1.0–1.5 ppm. Hot tub and spa care: test water before each session to ensure comfortable and safe conditions. Professional pool checks: convenient portable kit for service technicians performing on-site inspections. Why it stands out Combined pH and residual chlorine colour chart provides clear, immediate comparison without complicated electronics or calibration. Compact storage box and lightweight components make it practical for both homeowners and professionals. Note: Follow all local safety guidelines and product instructions when handling reagents and adjusting water chemistry.