lcmsms

[venkatpadala]

hai every body
i have a doubt. how to define resolution in MSMS
please give me good answer.
venkateswarlu p

[MG]

On quad and trap instruments, my experience is that it is usually defined as the full peak width at half-maximum (FWHM), whether you are doing MS or MS/MS. For quads set to "unit" resolution, this is about 0.6 to 0.8 m/z. Some ion traps will have better resolution than this (smaller FWHM) on the standard resolution setting.