Irradiation can be used to sterilize all except :
Bronchoscopes are sterilized by glutaraldehyde (Cidex). Gamma rays are used for sterilization of pre-packed disposable items, sutures, IV cannulas, urinary catheter, contraceptive devices, bone or tissue grafts
Bone graft
Suture
Aificial tissue graft
Bronchoscope
General Microbiology (Sterilization and Bacterial Genetics)