KN95 vs FFP2 Mask - What's the Difference?
The kn95 mask has been certified for use for up to 100 hours while the ffp2 can serve you for 200 hours. You can wear your kn95 nonstop for about 8 hours without compromising your safety. However, you can stay with your ffp2 mask for up to 72 hours and it will still give you utmost protection.