Result Table Error Messages

When it is not possible to use the selected type of Calculation for whatever reason, a red error message in the Result Table header (with exclamation marks) indicates the cause of the problem. Bellow is a list of possible chromatogram error messages with descriptions and possible reasons.

List of possible error messages in the Result Table:

Error message Detailed description
No identified peak(s) Based on the linked calibration it was not possible to identify any peak. Possible reasons are for example incorrect linked calibration or compounds in calibration are not checked as used.
No ISTD peak detected The calculation cannot be performed using the internal standard because the calibration does not contain any peak which has been indicated as internal standard (ISTD). Uncalibrated calculation will be used instead. Make sure ISTD Peak with appropriate Retention Time is entered in the calibration or change the chromatogram Calculation type so the ISTD compound is not requested.
No valid level in ISTD%d compound ISTD peak is identified in the calibration but does not have a valid level. View the linked Calibration, switch to the ISTD compound tab and make sure there is valid level and it is checked as used.
Missing ISTD Amount in Sample When ISTD calculation is selected, it is necessary to enter the ISTD Amount used in the sample. It can be entered in the Common for All Signals part of Results (Chromatogram window). For the ISTD2 - ISTD10 click the button.
No ISTD Amount given in Calibration When ISTD calculation is selected, it is necessary to enter the Calibration ISTD Amount. It can be entered in the Amount column in the Calibration window.
Calibration curve could not be constructed

If calibration curve could not be constructed for one compound in calibration, no results are calculated for all compounds. The problematic compound can be detected in the Peak Type column as "Error". To construct the calibration curve View the linked Calibration and check the Amounts and Responses for given compound are set correctly.

If compounds do not need to be quantified (e.g. Calibration is used only to identify peaks) Free Calibration can be used (On the given compound tab in the Calibration set the Curve Fit Type to Free Calibration for the compound)

Calibration curve could not be constructed for multiple compounds Same as the error message above, only calibration curve could not be constructed for more that one compound. Curves for all compounds have to be constructed to get calculated results.
Signal is moved/scaled It is not possible to quantify results as the signal has been moved or scaled. To get the signal into the original position go to the menu Display - Properties - Signals tab, use the Original button in the Offset & Scale part.
Not all sample peaks are identified This message appears when the Calculation is set to NORM and it is not possible to identify all peaks. It is possible that some required compounds in the calibration have incorrect retention time, are not checked as used or are not entered in the calibration.
Sample Amount must be zero. When the Calculation is set to NORM the Amount must be zero. Both Calculation and Amount can be modified in the Common for All Signals pane in Chromatogram window.

List of possible error messages in the Result Table when using MS extension:

Error message Detailed Description
Failed to load the NIST library. Please check whether the location of NIST libraries is correctly set. Please check the library specified on the MS Method tab in the Library Compound - ID column exists or is set correctly
Failed to load the library spectrum. Please check if the compound is present within the library. Please check the spectrum specified on the MS Method tab in the Library Compound - ID column exists in the library

List of possible error messages in the All Signals Result Table:

Error message Detailed description
Compound used on multiple signals By default Clarity controls whether one compound is used on one signal only. It can be turned off using menu Results - Compound Unique on One Signal.
Some signals are hidden or moved/scaled

All Signals Results cannot be quantified because of hidden/moved or scaled signal.

Hiden signal can be noticed/viewed in the Chromatogram List which is invoked from menu Chromatogram - Chromatograms...

To get the moved or scaled signal into the original position go to the menu Display - Properties - Signals tab, use the Original button in the Offset & Scale part.

Note:

In the All Signals Result table are also messages mentioned in the Result Table tab.

List of possible error messages in the Column Performance Table:

Error message Detailed description
Signal is moved/scaled It is not possible to quantify results as the signal has been moved or scaled. To get the signal into the original position go to the menu Display - Properties - Signals tab, use the Original button in the Offset & Scale part.

List of possible error messages in the DHA Results table and in the DHA Group Results table can be found here