Product Mode： Fixed mode of products： Test Speed： Number of tests： Equipment size： Description: The dust filtration efficiency testing equipment mainly adopts a self-developed control system, combined with imported laser particle counting. Comprehensive evaluation and testing of dust separation ability of vacuum cleaners based on upstream and downstream test data. Using a dust generator device, evenly distribute the dispersed aerosol into a 100MM diameter suction duct, and use a standard suction duct to suck the dispersed aerosol into the test hood. A standard diameter exhaust duct and related dust particle size sampling device are installed on the top of the test cover. Analyze and calculate filtration efficiency through upstream and downstream sampling devices and control systems. The relevant test data is exported via USB