These holders are made for biohazardous waste disposal bags. Easy to use. Bag is securely supported on a stainless steel wire frame and polypropylene bottom, which also serves as a containment tray in the event of a leak. Tray is safety orange in colour for easy identification as a biohazard containment system. Autoclavable at 121°C (250°F) to maintain sterility. The small bag holder is ideal for benchtop use.