True for most homemade masks.
The ‘95’ after ‘N’ or ‘P’ (for atmospheres carrying aerosolized oil <!>) indicates the efficacy at the micron level. ‘95’ has been deemed adequate to stop this virus, if the mask is properly fitted and worn correctly! I was fortunate to score the last 5 P-100’s from our local safety equipment store. Where you’d shop for a large orange-red fabric sign that’s lettered “One lane ahead. Prepare to stop.” Big league safety equipment!
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