Self-adhesive Steri-Dot® Indicators offer a fast, positive visual check on items that were sterilized by Ethylene Oxide gas. They also display a Red for Stop, Green for Go color scheme. A Red Steri-Dot® indicates that the package or load has not yet passed through sterilization - a Green indicates that it has. As an additional safeguard, in the absence of adequate humidity, the color change to green will not occur.