The CHEF MAPPER XA System is a pulsed field gel electrophoersis (PFGE) system constructed on the basis of the FIGE and AFIGE technologies resulting in the superior resolution from 100 bp to 10 Mb. The instrument can be used for all PFGE applications. The user can choose any pulse angle from 0 to 360°, which allows optimal separation of both chromosomal and plasmid DNA. The nonlinear ramps allows to separate fragments linearly from 50 to 700 kb. For more information visit