Is it possible to calculate RRT (Relative Retention Times) in Clarity?

Yes, since Clarity ver. 3.0 you can add a User Column which displays RRT according to a Compound Name. To do this, follow the instructions:

  • In the chromatogram, you need a defined peak name from Calibration Table which will be used for calculation of other peaks RRT. Alternatively you can name a peak directly in the chromatogram by using the Force Peak Name function.
  • Add new User Column In the Result Table and in the Expression field type [Reten. Time]/[COMPOUNDNAME$Reten. Time]. COMPOUNDNAME is the compound that will be used as reference peak to calculate the retention times. You can generate the calculation by choosing the Reten. Time in the Columns field, then the "/" sign and for last click the Special Values button and click on the Compound item. Type name of the column in the Title field and hit OK. New column appear in the Result Table containing the calculated RRT.

rrt calculation

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Last updated: 2020-10-01 | webmaster