GC LOD Blank SD Calculator – Standard Deviation From Blanks

This GC LOD Blank SD Calculator determines LOD for your chromatographic method using the formula LOD = Mean + 3*SD.


GC LOD Blank SD Calculator Interface


What inputs are required ?

  • Min 8 x peak areas of a target peak in a blank run
  • Slope of a calibration curve of the target compound (area as y axis – concentration as x axis)
  • Intercept of a calibration curve of the target compound (area as y axis – concentration as x axis)

What the GC LOD Blank SD Calculator Outputs

  • Average of the peak areas of the target peak
  • Standard deviation of the peak areas of the target peak
  • Detection limit (LOD)
  • Quantitation limit (LOQ)

Before You Go

Want to understand how this calculator works behind the scenes?
Read the full explanation in the GC LOD Standard Deviation: A Clear Guide to the 3×SD Detection Limit Method post in the Detection Limit (LOD/LOQ).

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