Fit factor

Noun

Definitions

1.NounA quantitative metric that measures how well a particular mask or respirator fits to a specific individual's face, defined as the ratio of the ambient concentration of aerosol particles to the concentration within the facepiece during use.

Synonyms

e-fit figure of merit s/f ratio faciometrics horowitz index absorption factor pneumotachometer manovacuometer correction factor pneumatometer spirometer sun protection factor

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