关键词: 期间核查, 控制图, 标准偏差

Abstract: The intermediate checks of laboratory equipment is an important means to ensure the effectiveness and reliability of equipment. Through the three examples of intermediate checks, focuses on the check methods for the accuracy, repeatability and stability of laboratory instruments and equipment, and draws the control charts corresponding to the accuracy check. According to the change trend of the check data in the control chart, find out anomalies and provide solutions.

Key words: Itermediate checks, Control chart, Standard deviation