The following parameters allow users to annotate the chromatogram peaks with various parameters by selecting the checkboxes corresponding to the parameters in the Labels area.

Parameter

Subparameter

Description

Labels

Use the features in the Labels area to annotate chromatogram peaks.

Label with

Retention Time (RT)

Adds a RT label (in minutes) on the chromatogram peak to indicate the injection and detection time.

Decimals

Changes the number of decimal places in the RT label.

Range: 0–5.

Unit

Defines the following units for the RT label:

  • Decimal Minutes
  • Decimal Minutes with Units
  • Minutes and Seconds
  • Seconds
  • Seconds with Units

Peak Area

Adds a peak area label above each detected chromatogram peak to indicate manual integration (MA) or automatic integration (AA).

Peak Height

Adds the peak height with manual integration (MH) or automatic integration (AH) above each detected chromatogram peak.

Signal to Noise

Adds a label above each detected chromatogram peak that indicates if the signal to noise (S/N) value was calculated with the pharmacopeia method (S/N) or without the method (PSN).

PWHH

The peak width at half height (PWHH) is the length of the line parallel to the peak base at 50% of the peak height; this line terminates at the two points where it intersects the limbs of the peak.

Scan number

Adds the active scan number label (S#) above the chromatogram peak.

Base Peak

Adds an m/z label to each detected chromatogram peak to indicate the most abundant ion in the RT.

Format

Use the features in the Format area to modify the appearance of the Chromatogram view.

Plot Options

Stack

Stacks the chromatogram traces vertically.

Overlay

Overlays the chromatogram traces vertically.

Skew

Sets the skew angle (time offset) to a value from 0–45 degrees for an overlay arrangement of chromatogram traces. Use the Skew slider to offset the x axis of the traces. You cannot offset the x axis when the traces are 100% overlaid to the same elevation on the y axis.

Elevation

Sets the vertical spacing for an overlay arrangement of chromatogram traces. Use the Elevation slider to change the overlay status of the traces. Moving the slider fully to the left overlays the traces to the same elevation on the y axis.