being as I am of the whiskery type. (full beard) I cant of course wear the conventional "air shield" type PPE. I do however have a "pure flo" (tm) air hood. It is a pureflo PF2. Now the problem is...where can i get spare filters from It is currently fitted with a TH2P filter...which is the equivalent to the PFF2 standard i.e suitable for fine hazardous dust. or alternately, does anyone know whence i can obtain some 0.5micron HEPA material from which to cut my own?