Warning signs and emergency contact information up to date and posted on doors

All laboratory doors must have an “Admittance to Authorized Personnel Only” label provided by EHS. This sign must contain appropriate contact information including the name and phone number of the laboratory supervisor or other responsible personnel. These names and numbers shall be updated when personnel change. In case of an emergency, responders use this information to contact knowledgeable personnel about specific laboratory hazards.

In addition, signage must have symbols that reflect the current hazards found in the laboratory: for example, a biohazard label is required for all areas or equipment in which BSL-2 or higher agents are handled or stored; chemical hazard symbols must be present if a laboratory has 10 gallons or more of a flammable or corrosive liquid or toxic gas(es) and so on.


  • Biosafety in Microbiological and Biomedical Laboratories, 5th Edition. Section IV. MSU Chemical Hygiene Plan. Section 5.1.2.
  • MSU Biosafety Manual
  • MSU Bloodborne Exposure Control Plan OSHA Standard 1910.1450 App A.

Corrective actions:

Request door signage from EHS Safety Portal (Lab Door Sign Request).

Review selection criteria for hazard labels before starting your request on the EHS Safety Portal (Lab Label Request).

Periodically check the contact names and phone numbers on signs to make sure they are current and submit a request for a new sign as needed.