1. System suitability must be demonstrated throughout the run by injection of an appropriate control preparation at appropriate intervals, including at the end of the analysis.
2. The control preparation can be a standard preparation or a solution containing a known amount of analyte and any additional materials useful in the control of the analytical system, such as excipients or impurities.
1. System suitability must be demonstrated throughout the run by injection of an appropriate control preparation at appropriate intervals, including at the end of the analysis. 在系统运行过程中，必须隔一定的时间，包括分析结束时进一针对照品观察系统适应性情况。
2. The control preparation can be a standard preparation or a solution containing a known amount of analyte and any additional materials useful in the control of the analytical system, such as excipients or impurities. 对照品可以是标准溶液，也可以是已知量（浓度）的成分溶液和分析过程中所添加的物质，如辅料或杂质
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