Figure 3

Assessment of chip performance. Overview of total peak number (panel A; S/N>5); percentage of peaks observed in all eight spectra with a S/N > 5 as a measure of reliability of the measurement (panel B) and the average CV (peak intensity) of those peaks detected in all eight spectra with a S/N>5 (panel C). Hatched bars represent CHCA, grey bars represent SPA and the black bar represents the SEND chip with covalently coupled CHCA. The different chip types used are indicated. Mass range for CHCA is 1–30 kDa, Mass range for SPA is 1–100 kDa.