A biological safety level (BSL), or biosafety containment level, is a set of laboratory safeguards (equipment, practices, security) designed to protect researchers in the laboratory, as well as the surrounding community and environment, from infection or contamination when working with biological materials and/or potential biohazards. The containment levels range from the lowest risk of biosafety level 1 (BSL1) to the highest risk of biosafety level 4 (BSL4).
- Additional Practices - BL2 An explanation of the additional safety practices that may be assigned to research requiring Biosafety Level 2 (BL2) containment.
- COVID-19 Research Laboratory Biosafety Guidelines Guidance describing the types of research activity, appropriate biosafety levels, and contacts for questions and institutional approvals required for University of Michigan researchers working in laboratories during the COVID-19 pandemic. Last updated: 05/03/2021.
- NIH Guidelines, Appendix G: Containment Provides information about biosafety level containment requirements, best practices, equipement and more.
- U-M EHS Biological Safety Designated Standards for U-M Laboratories An explanation of the expected features and practices of BL1 and BL2 laboratories at U-M.