Residual chlorine pH rapid detector: It is a device that can quickly and accurately detect residual chlorine and pH value in water samples. It is designed specifically for on-site testing, compact and portable, making it easy to carry to different places for testing work. Widely used in drinking water, swimming pool water, sewage treatment and other fields, it can help staff timely grasp the water quality status, ensure residual chlorine and pH values are within a safe range, and safeguard people's water health and safety.