In the healthcare setting, choosing the appropriate face mask is a key component in minimizing the spread of potentially infectious diseases. However, choosing the correct mask can be a difficult task considering the different options, prices, and brands that are out on the market.
Well then, what criteria should you use when choosing a face mask? The FDA, who oversees the sale and marketing of all surgical masks, recommends that manufacturers demonstrate mask performance in 4 areas:
Fluid Resistance
Differential Pressure
Filter Efficiency
Flammability
ASTM International has been long-held as one of the largest standards for the testing of face masks in these 4 areas and is recognized by the FDA. According to ASTM Standard F2100-11, there are 3 different levels of protection.
Below is brief guide breaking down the appropriate level mask for the procedure at hand.
Minimum Protection | Ideal as a simple barrier for exams and short procedures that do not produce fluid, spray or aerosols. | |
Level 1 | Ideal for procedures where low amounts of fluid, spray and/or aerosols are produced. | |
Level 2 | Ideal for procedures where low to moderate amounts of fluid, spray and/or aerosols are produced. | |
Level 3 | Ideal for procedures where moderate to heavy amounts of fluid, spray and/or aerosols are produced. |
And here's a guide that shows the specific data required in order to be labeled a ASTM Performance mask. Below is brief guide breaking down the appropriate level mask for the procedure at hand.
ASTM F2100-11 Standards |
ASTM Level 1 Mask |
ASTM Level 2 Mask |
ASTM Level 3 Mask |
Fluid Resistance, mmHg |
80 |
120 |
160 |
BFE |
≥95% |
≥98% |
≥98% |
PFE, @ 0.1 micron |
≥95% |
≥98% |
≥98% |
Delta P, mm H20/cm2 |
< 4.0 |
< 5.0 |
< 5.0 |
Flame Spread |
Class 1 |
Class 1 |
Class 1 |
How do you know if your face mask will protect you from infectious microorganisms? Look at the package! The new ASTM F2100-11 standard requires a graphic display on the packaging stating the mask performance level. ASTM International levels of protection are a well-known guide used to select the mask design, fit and filtration that matches the protection needed for each procedure or risk level.