ORBIS Autoclave roll with blue paper backing. Closed with butt welds or autoclave tape. Used for sterile wrapping of instruments and trays. Has a built-in indicator that changes color during steaming (from blue to brown) and sterilization (from red to yellow). Instruments and trays that are wrapped in foil must be placed in the autoclave with the paper side down so that the water penetrates through the paper and out of the foil after the end of the cycle.