Abstract: A canister for holding a stack of floppy disks, during manufacture of diskettes, or during storage and shipment of the disks. The canister is impervious to ultraviolet radiation, and comprises a base and a deep cup-shaped cover which latches to the base during storage and/or shipment, and which is removed after the canister's base is coupled to the proper input station of a diskette manufacturing machine. The canister is adapted to hold disks of a number of different types, but all of the same size. For example, disks which have been burnished, but not tested, and disks which have been both burnished and tested are different type disks. The canister base is different colored, in accordance with the type disk which is to be held by the base. Also, the base carries a unique bar code and a unique mechanical interlock wall which identify the type disk to be held by the base.