Antibody purification is possible because the cepharose beads are conjugated with protein which has an affinity under certain conditions to immunoglobulins. Following, you'll find a basic protocol for antibody purification either by Protein A or Protein G. The purification steps for A or G are the same, however the buffers differ. 1mL of protein A will bind 20mg of antibody and 1mL of protein G will bind 11mg. The facility does offer antibody purification as a service