Can I use protein A or MabSelectSure (GE) for removal of Fc-fragments?

To use protein A or MabSelect Sure (GE) for removal of Fc as a platform after digestion with FabRICATOR or FragIT is problematic. Therefore we have chosen CaptureSelect in the FragIT Kit for removal of Fc fragments. CaptureSelect is much more specific for Fc. Both protein A and MabSelect Sure (GE) may have affinity for Fab and the degree of affinity is antibody dependent.We have many customer reports on this subject and they usually comes back to us for the CaptureSelect columns for the above reason.