I still remember my class A B C K fire extinguishers
@benis_redux K is for Grease fires. There might be one for chemical (like magnesium) fires but I don't know it.
@thatguyoverthere @benis_redux Now that I think about it K probably can be used for metal, because it's non water based foam.
I don't know if something like alkalines can all be (
@thatguyoverthere @benis_redux
However I know some chemicals, complicated ones, cannot be extinguished and your policy just becomes containment.
Something like a tire fire for example.