What is RSD in HPLC?

Time:2018/08/15 Pageviews:77 Share:

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The relative standard deviation.

meaning:

When several samples are generally measured in parallel, the rsd is determined and the accuracy of these values is determined. The smaller the rsd, the higher the accuracy.

For example, repeatability, precision, recovery and other tests need to calculate rsd, generally requires rsd not to exceed 2.0%. The repeatability (precision, recovery) of this experiment on your behalf is good.

Calculation:

Relative standard deviation (RSD) = standard deviation (SD) / arithmetic mean of calculated results (X) * 100%

Simply put, it is the SD/average. Calculated with the function of excel

Average = AVERAGE()

Standard deviation (SD) = STDEV( )

Example:

For example, there are three values: 200, 201, 199 need to calculate rsd

Then the average = AVERAGE (200, 201, 199) = 200

Standard deviation (SD) = STDEV (200, 201, 199) = 1

Then RSD=1/200*100%=0.5%

This is the end of the introduction of What is RSD in HPLC. I hope it can help you.