The main book has more detail on items than the character sheet does.
Bandolier: A strap worn across the body, fitted with specially-padded
pouches to hold three alchemical agents or spark-craft bombs. When you
employ an alchemical or bomb from a bandolier, choose one from the
list at right (or one of your custom-made formulas). See page 226 for
more on alchemicals and bombs. During downtime, you automatically
refill your bandoliers, so long as you have reasonable access to a
supplier or workshop. (1 load)
You don’t have to explicitly create the standard potions/bombs, and (under normal circumstances) it refills between scores.