Quantitative Fitting Test (ANFT) : A fit test in which the assessment of the adequacy of the respirator fit is numerically measured by comparing respirator leakage with ambient concentrations of the challenge agent
Grainger, Inc. (Maintenance, Repair and Operating MRO), Glossary of Safety Terms, IL, USA 2012. www.grainger.com/images/GlossaryofSafetyTermsPDF.p df, (IndS/Maint, Repr and Opr - Amer) {79}