I have situations where I want to use a factory coil head over a rebuildable, but it will only be for a short time (a day or less) and then I won't need that coil head for a while.
But the problem is, I find that if I leave a factory coil head unused in a tank for a while it tends to taste kinda funny and it doesn't last very long after that. One solution would be to just keep vaping it until it's spent, but that seems like a waste of a coil head since I'm vaping it when I could be vaping a rebuildable.
So instead I'm thinking if I remove it from the tank and keep it submerged in a little jar of PG until I need to use it again, maybe that will keep it from tasting bad and prolong it's life. Or maybe not. I guess I'll find out.