The filters have been independently tested by Nelson Labs to provide higher than 95% Bacterial Filtration Efficiency (BFE).
What are your ratings?
- BFE ≥ 95% : Bacterial Filtration Efficiency 95% of a representative microorganism (a strain of bacteria) are prevented from passing through.
Aren’t bacteria and viruses different?
Yes, bacteria and viruses are different. The ASTM F2101-19 performance of filter media test evaluates filter efficiency in terms of bacterial filtration efficiency. This is a test standard used to rate the filters we are providing by Nelson Labs, a third-party testing facility.
Ministry of Supply face masks are not devices intended for use in the diagnosis of a disease or other conditions or in the cure, mitigation, treatment, or prevention of disease.