In order to better serve the users of water treatment companies and meet customer needs, accurately evaluate the existing performance status of the membrane element system, the recovery of chemical cleaning, and the inspection of the cleaning effect. Based on technical service experience and market demand, Hangzhou Renren Environmental Protection has developed a membrane performance testing device, which consists of a solution tank, a solution pump, a security filter, a high pressure pump, a membrane shell, a pressure gauge, a flow meter, and a conductivity meter. , Thermometer and various valve pipeline components are assembled. When the device is turned on, you can quickly and easily observe and record temperature, inlet water flow, produced water flow, concentrated water flow, inlet water pressure, produced water pressure, concentrated water pressure, inlet water conductivity, produced water conductivity, and then calculated The reverse osmosis membrane's desalination rate, pressure difference and other indicators can quickly and accurately detect and evaluate the performance of the reverse osmosis membrane.