The swimming pool chlorine residual detector and PH water quality detector Accurate and fast results: Provides quick, accurate measurements of both pH and chlorine residual levels to keep your pool or spa safe for swimmers. Tool for maintaining PH and chlorine levels: Helps you maintain the correct balance of pH and chlorine without guesswork or unnecessary chemical additives. Easy to use: Electric testing system designed for straightforward operation, suitable for routine monitoring of pH and chlorine residual levels in pools, spas, and other water sources. Supports health and safety: Regularly checking pH and chlorine levels is essential to maintaining a healthy swimming environment and helps prevent ear and skin infections and waterborne illnesses. Compatible and versatile: Suitable for home backyard pools, public or community pools, and portable spas or hot tubs, delivering reliable performance across common water settings. Use scenarios Daily maintenance of a backyard pool to ensure safe swim conditions after heavy use or chemical dosing. Spa or hot tub care to maintain comfortable, irritation water by keeping pH and chlorine within recommended ranges. Routine checks at rental properties, fitness centers, or community pools to support safety compliance and consistent water quality.