
Chapter 6 Acquiring Mass Spectra
6-8 PerSeptive Biosystems
6
• Sequence Control calibration–Provides external,
internal, and internal with automatic updating calibration
options during acquisition from the Sequence Control
Panel. For more information, see Section 6.7.7.1,
Calibration Options in a Sequence.
For the mass accuracy specifications for your instrument, refer
to Appendix A, Specifications.
NOTE: Mass accuracy for sample positions in the outer
rows of a sample plate may be poorer than the mass
accuracy of the sample positions in the inner rows.
When to calibrate
Calibrate:
• At least once a day. You may want to include calibration
standards on each sample plate.
• If the ambient temperature in your lab is fluctuating
more than 5°C, check calibration, and recalibrate if
necessary.
The calibration software compensates for changes in
instrument settings. However, if you require optimum mass
accuracy, generate a calibration file with identical instrument
settings or use internal calibration if possible.
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