Location:

Detection tab page
Report Variable (Detection Parameters)

Type:

Fixed point number

Dimension:

Signal unit, such as mAU

Value Range:

Off; 0.000 ... 1,000,000.000

Default:

The default setting is Off; that is, all peaks are integrated.

Related Parameters:

Minimum Height

Maximum Area Reject

Description:

Positive peak identification is performed using the Minimum Height parameter. All peaks above this height value are identified.

The Max. Peak Height detection parameter is used as a maximum criterion determining the height threshold above which peaks are not identified.

Function:

All peaks above the specified peak height are classified as Unknown; that is, despite positive identification, they are not assigned a name from the peak table. (The height is always determined relative to the baseline.)

This option is very useful when working with two detectors switched in series. Peaks that are clearly identified in the channel of the first detector, such as a UV detector, can cause problems in the second detector, for example, a fluorescence detector, due to an excessive concentration. These peaks are outside the linear range. Due to the positive identification, they would be considered in the calibration and they would falsify the result. If they are classified as Unknown, they are not considered.