Stepsize (LC/MS)

Stepsize is the mass step size (in m/z) for profile scans. The larger this value is, the faster profile scans are acquired at the cost of resolution and mass accuracy.

Minimum *Maximum Default
0.05 0.15 0.05

*The maximum cannot exceed the current value of the Window parameter. A different maximum applies in the Method Editor.

Step sizes of 0.05 and 0.10 are used for most applications. At a step size of 0.05, however, the mass range is restricted to 1600 to prevent data overflow. There are no mass range restrictions on larger step sizes. A step size of 0.15 is very useful for scanning across a large mass range during fast chromatography. Larger step sizes should be used with caution due to the resulting loss of resolution and mass accuracy.

See Also

Tune > Acquisition Section

Tune the MS manually (LC/MS)

Method > Acquisition (LC/MS)