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Biosafety Containment Level

  • 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).