All laboratories that are approved by the Stanford APB must have a sign on the outside of the door indicating that biohazardous material is used within the room. Investigators who are using BSL2 or 3 agents or rDNA/sNA are required by the NIH to post a sign that incorporates the universal biohazard symbol on the outer laboratory door (Figure 7). The sign must include the agent name, Biosafety level, and specific requirements for entry, the PI’s name and spaces for two phone numbers of laboratory staff in case contact must be made. Biohazard signs are available through EH&S (Figure 8).

Red-orange coded biohazard labels must be placed on storage freezers, refrigerators, any laboratory equipment used with BSL2 or 3 agents, shipping containers, medical waste containers or any surface which may be reasonably anticipated to encounter surface contamination from biohazardous materials. These labels are available through EH&S.