In-house standards may be used for routine analysis, provided that they are calibrated against EDQM reference standards. For more information, see Ph. Eur. general chapter 5.12. Reference standards. 如果内部标准品使用EDQM标准物质进行了标定,可以用于常规分析。更多信息,请参阅欧洲药典5.12章<标准物质>。