Metrolab Blog

Particle counting – Knowledge Hub

*Did you know?* #Coronavirus cannot travel alone!

Coronavirus has an average size of 0.1micron. However, in reality, coronavirus can be transferred with a host such as droplets from a sneeze, cough or even while speaking. These droplets are up to 10 microns (PM10) or even larger.

Wearing N95 #facemask provides full protection since N95 filters have a collection efficiency of at least 95% when tested against nonoil particles (e.g., NaCl) having a count median diameter (CMD) of 75nm ± 20 nm which is 0.0075micron. However, regular #surgeonmask can protect us any size of droplets too. So, let’s leave N95 masks to doctors, paramedics and medical staff. And put your masks on at all times! Stay safe!

#particle#droplets#coronavirus#n95mask#particledistribution

coronavirus size comparison