FAQ

 
Kovats Retention Index 13.6.2011

Precondition:

The Retention indexes columns are hidden in the default layout of Clarity tables.
To display them in both the Calibration window and the Chromatogram window:

  1. Open the Calibration (Chromatogram) window.
  2. Point cursor in the calibration table (or Results table in chromatogram) and click the right mouse button.
  3. A local menu will pop up, select the Setup Columns command.
  4. In the Setup Columns dialog select Reten. index in the hidden columns list and click Display button and then OK.
  5. Now the Retention indexes will be visible in the table.

To set the indexes:

  1. In the calibration table, fill the Retention indexes to the corresponding peaks. The other peaks leave at zero value
  2. Do not forget to save the calibration.
  3. Open the chromatogram, that uses the calibration.
  4. In the result table you will see the retention indexes.

See the screenshots:

kovats-retention-index-chromatogramkovats-retention-index-calibration

Unretained peak:

If you need to use the Unretained Peak, follow these steps:

  1. In the Calibration window, open the Calibration Options and turn on the Retention Indexes with Unretained Peak option.
  2. You can change the Unretained Peak [min.] value in the Method Setup - Advanced tab.
  3. If you want to change the value in the Chromatogram, click the Results - Performance Table menu in the Chromatogram window first.
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