2019年12月20日 · N95, N99, and N100 are each safety ratings for masks and respirators. Knowing the difference between each rating will help you choose the correct mask.

2020年4月16日 · In the midst of the coronavirus pandemic, these masks have become lifesaving tools to medical personnel and other frontline workers in the fight against COVID-19. But lately, you may have spotted...

This page contains a suppliers list of NIOSH-Approved N99 Particulate Filtering Facepiece Respirators.

Surgical N95 – A NIOSH-approved N95 respirator that has also been cleared by the Food and Drug Administration (FDA) as a surgical mask. N99 – Filters at least 99% of airborne particles. Not resistant to oil.

2022年7月5日 · Best recyclable mask: Vida NIOSH and FDA Authorized N95 Mask; Best sturdy mask: WellBefore N95 Medical Respirator Mask; Best soft mask: Private Stock Labs KN95 Protective Mask

2020年7月9日 · Results showed that N99 masks, which are designed to prevent 99 percent of particles from getting in, were the most effective. They reduced the average risk by 99 percent in 30-second settings...

2020年9月4日 · Therefore, N99 masks, another type of mask, block at least 99 percent of particles 300 nm and larger. A surgical mask is a relatively loose-fitting protective mask, which does not provide assured...