- Prevent equipment damage from unbalanced water. An unbalanced pool or spa water can corrode ladders, pumps and other equipment. The water quality tester tests pH and chlorine content for pools and spas to help maintain proper balance. - Maintain chlor-alkalinity and pH safely. The chlor-alkalinity test kit helps keep chlor-alkalinity and pH within safe limits, protecting water quality and equipment. - Clear target ranges. For pools and spas, aim for chlorine 1.2 to 1.7 ppm and pH 7.2 to 7.8. - Large, easy to read display. The device provides a large screen display with clear, accurate results for pH and chlorine content. - Suitable for pools and spas. Designed for testing water in swimming pools and spas to support regular maintenance. - Use scenarios - Routine maintenance: perform weekly tests to keep water balanced and protect equipment. - Spa use and refills: test after heavy use or refilling to quickly bring levels into safe ranges. - Seasonal opening or changes in weather: verify and adjust chlorine and pH before opening or after rainfall or chemical additions.