Two separate questions.



Should the water purification tablet be kept in their foil pack, or would take them out and repack work? Given how small they are repack would reduce the overall size by quite a bit.



Also I see a lot of PSK, ready made and otherwise, have scalpel blade in them instead of single edged razor blade? Any specific reasons? In AMK PSK it even claims to be more functional. Scalpel is sterile as in foil pack but I really don't see any need unless one perform surgery on himself, and I'm definitely too chicken to do that. Single edged razor is much easier and more comfortable to hold onto and safer to use, since it's made to be hand held instead of attached to a handle.