This European Standard specifies basic requirements for microbiological safety cabinets (MSCs) with respect to safety and hygiene. This European Standard sets the minimum performance criteria for safety cabinets for work with microorganisms and specifies test procedures for microbiological safety cabinets with respect to protection of the worker and the environment, product protection and cross contamination. Mechanical, electrical, chemical or radioactive safety precautions are not covered in the standard but are covered in EN 610101-1, EN 292-1 and EN 292-2 (see Bibliography (1), (2) and (3)).