4.How to verify the active carbon mask is genuine
There are a few
fake active carbon masks which use fake active
carbon pre-filter in the market.
For some active carbon masks, they are just "BLACK"
masks, not active carbon masks. They might look
like Active Carbon Masks because the appearance
is BLACK, but the suppliers just
die the color on the non-woven substrate which
contains no charcoal particle. The genuine active
carbon is carbonized under extreme high temperature.
Therefore, the active carbon will not melt or
disappear even undertaken high temperature afterwards.
Just cut the active carbon mask to take out the
active carbon pre-filter. Burn the active carbon
pre-filter. If you can not find any remnant of
charcoal particle or charcoal fiber, then you
might purchase the fake active carbon mask.