Analyst Software Reference Guide - AB Sciex

Terms and ConceptsFinding the Peak EndThe software declares a peak end point when one of the following occurs:• The difference between two consecutive points fails the noise threshold test.• The software detects the start of a new peak.In either case, the lowest bunched point from the last five bunches is considered to be the actualend point of the peak.In general, the software finds several peaks for each chromatogram. The peak it selects is theone whose retention time is the closest to the expected retention time, specified in the method. Ifno peak has a retention time within the specifications, the software marks the peak as not found.1Figure 1-9 Finding peaksItem Description1 The shoulder has no separate maximum point123Figure 1-10 Finding the peak end: case 1Item Description1 Exceeds noise threshold30 Release Date: August 2011