K and 95 vs N95 - Is Your Mask Really Effective?

K and 95 certainly provide better respiratory protection than surgical or cloth masks. But compared to N95, they have several limitations. The filter is just one component of what makes a respiratory protective mask effective. If your glasses fog up while wearing any respiratory protection device, this is a good sign that your mask does not fit. And there are now a lot of different K and 95 counterfeits in the market.