Microbial risk assessment with the LR-method in safety cabinets/class II benches

Microbiological risk assessment with the method for limitation of risks, the LR-Method, is described in this paper. Results from excerpts of case studies in safety cabinets/Class II benches are discussed. The LR-Method, which relies upon visualisation of air movements, particle challenge testing, and calculation of a risk factor, presents an effective way for limitation of potential microbial risks.