Another 270-mm diameter DPTE system with an α transfer door is mounted on the bottom of the isolation chamber. The autoclavable canister using a β door can dock to the port and with a depth of 20 cm is more suitable for transferring smaller materials such as animal blood samples. This type of short bottom transfer canister can be opened with a specialized tool in the biological safety cabinet, and the samples can then be removed for further stages of analysis (e.g., centrifugation), while the transfer canister is closed and put into a plastic bag for autoclaving.