- Color: Fluorescent orange or orange-red.
- Symbol: A black biohazard symbol on an orange or orange-red background. The biohazard symbol consists of three interlocking circles that form a trefoil, with the letters "BIOHAZARD" in white letters.
- Wording: The word "BIOHAZARD" in black letters on an orange or orange-red background.
These markings are used to indicate the presence of biological materials that pose a potential health risk. They are found on containers, equipment, and other surfaces that may come into contact with these materials.