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MS signal enhancement factor between the use of a 1.3 cm inlet and a 6.4 cm inlet versus mobility for all peptides species detected from a 1 μM peptide solution in a LC solvent mixture at two different electrospray flow rates. Charge-state of the peptide is shown by the number and the corresponding box around the data points. Enhancement factor is the ratio of the intensity from using the shortest inlet to the intensity from using the longest inlet.
