Caleo
Not Sapaghetti, I don't think dust masks do the job that covid masks are supposed to do Because dust masks have valves that let out exhaled air, whereas we need covid masks that filter inhalations AND exhalations. Dust masks are good for filtering inhaled air but they don't filter exhaled air.
You have to decide if you want one with a valve or not. There are two types of FFP3, valves and unvalved.
Looking at the valved ones, some have a directional valve which means it only opens onto your chest, some have valves that open in front (so they allow your breath to come forward), some have valves that only open under exertion/exercise.
The valves are not all the same.
The un-valved ones obviously don't have a valve.
The valved versions are just as good as unvalved for the person wearing them. They are also easier to wear for some people. All these well fitting masks are good with glasses compared to cloth ones as they are tight to the face.
If they are an FFP3 they meet the standards whatever the design. Many of the "dust" masks are guaranteed this standard but they will say so.
I am not an expert on masks but have spent hours researching them over the last 18 months having supplied my extended family with FFP3 /N95 / N99 in February last year.
Most mask manufacturers are happy to send you the test info if you are interested/concerned. Honeywell in America was really helpful for example.
I think on this thread I thought people were trying (primarily) to protect themselves Caleo. My interest a year ago last February was indeed to protect my family. If you would prefer one without a valve then that's fine. If they say FFP3, that's what they are tested to.
Please be aware the "F" and "N" systems are comparable but not tested in the same way. They have different testing methods.
Personally I'm happy with 95% filtration!
