3M Mask Surgical Tie-On Blue 50/Bx

3M's most popular flat surgical masks are preferred for their comfort and breathability.  As a tie-on surgical mask with horizontal ties, this mask is ideal for surgical and general-purpose use.

• >99% BFE{1} and >99% PFE{2}.
  
• Lightweight, three-layer construction is comfortable to wear.
  
• Designed to fit a variety of facial shapes and sizes.
  
• Does not contain either natural rubber latex or dry natural rubber as components in the product or its packaging.
• Non-fiberglass.

{1} - Bacterial Filtration Efficiency (BFE) determined by the modified Greene and Vesley test method.
{2} - Particle Challenge Study - measures filter efficiency only against mass median aerodynamic diameter particle. Surgical mask tests were conducted by an independent laboratory following a 3M internal protocol and using a 0.1 micron latex sphere at a flow rate of 28.3 liters per minute. PFE test results are provided for comparing performance of surgical masks under similar laboratory conditions. This does not reflect expected levels of filtration efficiency in actual use conditions nor replace the need to use NIOSH certified respirators if exposed to hazardous airborne contaminants.