Masks Standards • Face Masks
EN14683 & ASTM 2100 SPECIFICATION DEFINITIONS • Fluid resistance measures the mask’s ability to prevent fluids from traveling through the material. The higher the fluid resistance (filtration), the better the protection. (Measured in kPa or mm Hg.) • BFE (bacterial filtration efficiency) measures the mask’s ability to prevent bacteria from traveling through the material. (Measured at 3 microns.) • Delta P (differential pressure) determines breathing resistance—the higher the Delta P, the less the breathability, but the better the filtration. (Measured in Pa/cm 2 or mm H 2 O/cm 2 .)
ADDITIONAL EN14683 SPECIFICATION DEFINITION • Microbial Cleanliness measures the total bioburden of the mask per gram of mask material tested. (Measured in colony forming units per gram; cfu/g.)
ADDITIONAL ASTM 2100 SPECIFICATION DEFINITIONS • PFE (particulate filtration efficiency) measures the mask’s ability to prevent sub-micron particulates from traveling through the material. The size of the particles filtered is critical. (Measured at 0.1 micron.) • Flame spread is a ranking derived by laboratory standard test methodology of a material’s propensity to burn rapidly and spread flames.
HOW OFTEN SHOULD I CHANGE MY MASK? 1
Non-aereosol generating procedures every 60 minutes
Every each patient
Aereosol generating procedures every 20 minutes
If the mask gets soiled or wet
1 Masks are considered a secondary control and are not meant to replace recommended primary engineering controls for laser plume exposure. CAUTION: Like patients, every procedure is unique. Use your clinical judgment to determine the appropriate level of barrier protection based on the length of the procedure, the amount of fluid or aerosol, and standard precautions.
B305
FILTRATION LEVEL KEY
EN 149: 2001 FFP2 NR Type IIR Enhanced Fluid Resistance ASTM 3 Type IIR ASTM 2 Type II ASTM 1
Minimum Performance
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