Application of quality control chart in laboratory quality management

According to the requirements of GB/T 36893—2018 standard, the continuous monitoring of the test system of standby power in the standard was taken as a case. Under the condition of repeatability, the measurement method of energy efficiency detection of air purifier and the measurement data of standby power were used as quality control data. The quality control chart was established, and the control limit, warning limit and application range were obtained. The quality control chart had been well applied in the laboratory and achieved practical results, which improved the management efficiency.