Duo-Check® Ethylene Oxide (EO) Gas / Steam 2-1/4 X 4-1/2 Inch Transparent / Blue Self Seal Paper / Film Duo-Check offers extra wide chevron protection against instrument breaching Wet strength treated, virgin medical grade paper that meets or exceeds medical pouch standards Wide self-seal adhesive strip easily and securely seals pouch, providing reliable seal until pouch is opened Perforated fold Thumb notch Six corner tack seals Internal and external indicators change color with sterilization heat, are easily visible, and are compatible with steam (indicators turn light brown) and EtO (indicators turn dark brown) sterilization agents
