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.

Line it with a paper towel

or N95/KN95 insert liner