Tie-on surgical masks with off-the-face design and unique filter to reduce fogging. The masks have >99% Bacterial Filtration Efficiency (BFE) determined by the modified Greene and Vesley test method and >95% 0.1 micron filter efficiency determined by Particle Challenge Study which measures filter efficiency only against mass median aerodynamic diameter particle.
This product used to be identified as 1838. The product is the same, only the number has changed.
Box of 50 masks