AquaChek Chlorine 4 In 1 Test Strips 511244/242 AquaChek Chlorine 4-In-1 Test Strips 511244/242 offer pool and spa owners a fast, reliable, and user-friendly solution for essential water testing. These strips combine convenience and accuracy, making them ideal for anyone managing a chlorine-based system. Key Features and Benefits Tests for free chlorine, pH, total alkalinity, and cyanuric acid (stabilizer)—covering all the core parameters needed for balanced pool or spa water. Innovative flip-top cap dispenses one strip at a time for easy, mess-free handling. Delivers results in just 15 seconds, streamlining routine water checks so you can act quickly and confidently. Highly accurate and trusted by pool professionals for consistent water balance and safety. Sealed, watertight container keeps strips fresh and ready for use, helping you avoid inaccurate readings. Includes 50 test strips per bottle—plenty for regular maintenance all season long. Specifications Model/Part Number: 511244/511242 Test Parameters: Free Chlorine (0–10 ppm), pH (6.2–8.4), Total Alkalinity (0–240 ppm), Cyanuric Acid/Stabilizer (0–300 ppm) Recommended Uses: Swimming pools and spas using chlorine Application: Dip a strip in your pool/spa water for 1 second, wait 15 seconds, then compare to the color chart on the bottle. Package Count: 50 strips per bottle Upgrade your water maintenance routine with AquaChek Chlorine 4-In-1 for a sparkling, healthy pool or spa—every test, every time.