A Good Surgical Mask obviously refers to one which can provide a high level of protection, is safe to wear, and allow comfortable easy breathing.
Here are the specifications to look out for and what they mean
BFE refers to Bacterial Filtration Efficiency. A good 3Ply Surgical Mask will have a filter in the middle layer which largely determines the mask's effectiveness to filter out the dangerous particle or bacteria. A mask with B.F.E > 95% means at least 95% of the bacteria can be blocked by the mask filter material. The higher the BFE%, the more bacteria the mask can filter.
Recommended: BFE>95% (TYPE I) OR BFE > 98% (TYPE II)
PFE refers to Particle Filtration Efficiency.
The higher the %, the better the wearer is protected from airborne particles, dust, and debris.
Recommended: PFE>95% OR PFE > 98%
EN14683 and/or ASTM F2100
Masks may have EN14683 European standards or ASTM F21000 US standards, meaning they passed quality, hygiene, and safety standards for medical use. For peace of mind, look for products that comply with EN14683 or ASTM F2100 standards.
Recommended: EN14683 or ASTM F2100 standards.
Delta -P Or Breathability
Delta-P (Breathability) Determines the resistance of the surgical facemask to the air flowing through the mask. A lower Delta-P