First, make sure your masks are not printed with ink.
N95 with ink
This branding was printed with ink and will dissolve in your wash.
KN95 melted branding
This branding is melted in the mask and is safe for use.
Setup of an N95 mask for filtering the wash.
All the parts
N95/KN95 mask with straps,
5 inch funnel and mason jar,
thin 2 layer paper towel,
or N95/KN95 insert liner
Strap on the N95
The straps easily extend around the funnel.