GB/T 16427 - 1996 for the determination of dust layer resistivity. It is based on specific electrical principles, using suitable test equipment for measurement. Detailed sample preparation, how to collect representative dust and evenly spread the test layer. Clear test environmental conditions, such as temperature, Humidity and other control ranges. Standardize the operation process, covering electrode arrangement, voltage application, current measurement and data processing methods. With this standard, the dust layer resistivity can be accurately determined, providing key data for industrial ventilated dust removal, dust explosion prevention and control, helping to ensure safe production and environment management, and effectively preventing various risks caused by dust characteristics.