Peak Labels

For MS Purity Ion peaks snippet, the Peak Labels tab is not supported.

Peak Label Visibility

Show Peak Labels	If you select Show Peak Labels, you can choose among several options regarding the exact position and the appearance of the labels.
Elevation	Number of degrees (relative to the diagram) used to orient the labels.
Connection Line	A line is shown that connects each label to its corresponding peak.
Automatic Shift	If the peaks are close together, the system automatically adjusts the location of the labels in order to avoid an overlay.
Bounding Box	A box is shown around each label.
Undetected Compounds	Expected but not found compounds are labeled in the graph. The label may include the retention time and the compound name of an undetected compound.
Annotate all Signals	If selected, the peaks in each single signal are annotated. If cleared, only the peak in the first signal is annotated. Overlaid graphs with many signals may be easier to read if only the first signal has peak annotations.
Advanced Peak Labeling	Use this option to reduce the drawing of peak annotations for complex chromatograms. If selected, a label of a small peak will not be drawn if it overlaps with the peak label of the larger peak. For integrated peaks, if there is no space for the label, the small vertical gray line is displayed.

Peak Labels

Label 1-4

You can define up to four values to be shown in each label.

Font

Click the Font... button to configure the font and style of the label texts.

The font size may differ slightly from the number you choose in the Font dialog. This happens because font size points do not exactly match monitor pixels. The application automatically calculates the font size that corresponds to the actually used number of pixels.

Labels are merged

The different values inside a label are shown in separate lines by default. If you select this option, the values are shown in the same line, separated by the specified Label Separator.

The equal sign (=) cannot be used as a Label Separator.

Default Coloring

If you show different signals in an overlaid diagram, the system automatically uses different colors for different signals. With Default Coloring, the labels are shown in the color of the respective signal.

Use Color

Show the labels in all chromatograms in the same color.

Peak Markers

Here, you can select several markers to be displayed in the chromatograms.

If you select Annotate all Signals, the peaks markers in each single signal are shown. If cleared, only the peak markers in the first signal are shown. Overlaid graphs with many signals may be easier to read if only the first signal has peak markers.

Use Color allows you to set specific colors for the peak start/end markers and for the peak baseline.

Peak Filling

You can choose among different types of peak filling:

Default Coloring	With the Default Coloring option, the system automatically uses different colors for different signals in an overlaid diagram.
Use Color	Use the same color for the peak filling in all signals, or use an expression to choose the peak filling based on a condition (see Choose peak filling based on a report parameter).

System Suitability Annotations

The settings in this area are only active if you selected the display format Separate on the Multi Signals page. You can select the following annotations to be displayed in the chromatogram:

Show Tangents	Draw the tangents at the inflection points of each peak. The tangents are shown in red.
Show Apex Line	Draw a vertical line at the apex of peak. The vertical line is shown in green.
Peak Width Markers	Draw horizontal lines to mark the peak width at 5%, 10%, or 50% of the peak height.

We recommend using the System Suitability Annotations only for single peak plots. If there are multiple peaks, the multitude of lines will make the chromatogram difficult to read.

Fraction Results Annotation

If you select the check box, fraction annotations will be added to the chromatogram:

• A background color will mark the time region the fraction was collected from, taking into account the individual detector delays. The color corresponds to the trigger reason (see Learn more about color codings).

• The fraction location will be added as a peak label.

Font

Configure the font and style of the fraction location annotation.

The font size may differ slightly from the number you choose in the Font dialog. This happens because font size points do not exactly match monitor pixels. The application automatically calculates the font size that corresponds to the actually used number of pixels.

Elevation

Number of degrees used to rotate the fraction location annotations.

Peak Baseline

With this setting, you can define the color of the baseline in the chromatogram.

Default Coloring	With the Default Coloring option, the system automatically uses different baseline colors for different signals in an overlaid diagram.
Use Color	Use the same color for the baseline in all signals.

Timed Group Annotation

If you select the check box, timed groups are annotated in the chromatogram. Start and end times of each time range are shown with vertical dashed lines. The name of the timed group is shown for each time range.

If a time range is not annotated, the reason may be one of the following

• You have scaled the chromatogram to specific values, so that only part of the timed group is shown in the chromatogram.

• No peaks have been found in the timed group.

Peak Purity Annotation

If you select the Show Impurity Check Annotation check box, impurity check annotations will be drawn in chromatogram.

The settings in this area are only active if you select the Separate format option on the Multi Signals page. Snippet that can display multiple signals are for example, Multi MS Chromatogram Separated and Chromatograms With Compounds.

For the snippets Peak Purity - Simple and Peak Purity - Curve, the settings are automatically preset and cannot be edited.

Flag Impurity Status

Draw a colored box for each peak. A green box is drawn for peak purity result above the limit defined in the processing method. A red box is drawn for peak purity result equal or below the limit.

This option applies to both UV and MS chromatograms.

Draw Impurity Check Curve (UV only)

Draw the threshold curve for each peak. All single match factors that were calculated for the peak are shown in the lower part of the chromatogram. A green background indicates a match factor above the limit defined in the processing method. A red background indicates a match factor equal or below the limit.

We recommend using this option for a chromatogram with only few peaks in order to see the proper curve.

This option applies to UV chromatograms only. It is not applicable for MS chromatograms.

If the data does not contain peak purity data, the additional area under the chromatogram will not be displayed.

Qualifier Annotations

The settings in this subsection are only active if the display format is Separate or Overlaid.

If you select the check box, annotations for MS qualifiers will be added to the chromatogram:

• Limit lines show the acceptable response range for the qualifier.

• The qualifier ratio is shown in the legend. If it is too high or too low, this is also noted in the legend.

See MS Qualifier Results.