UV purity ratio curve shown in Peak Details
The lower part of the Peak Details window shows the similarity for the single spectra of a peak in the similarity curve.
The application automatically calculates a threshold value for each spectrum of a peak, based on noise and variance of both spectra to be compared. The threshold value determines if a deviation from the apex spectrum is low enough to consider a spectrum as pure. A spectrum is classified as pure if the match factor is greater than or equal to the threshold value. The colored background indicates the purity of a spectrum.
The threshold depends on the sensitivity setting (see Adapt the sensitivity value).
Similarity curve