There are three parameters in the precision study: Repeatability, Intraday Precision, and Interday Precision. In the repeatability study spikes the same sample solution six times and the result should have RSD ≤ 1.0 %.
In intraday precision inject the sample of three different concentrations and should have RSD ≤ 2 %. And In Interday inject the same sample of three different concentrations within 2 to 3 days at the same conditions and should have RSD ≤ 2 %.
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