paise, this is the company I was thinking of, specifically:
Amber Euro Glass Bottle 50 ml w/ Dropper Cap (Blk) - 18 EURO BLK
I like the euro dropper caps because you can insert a syringe. I'm getting 30 mL and 50 mL amber bottles...I wish the cobalt came with euro dropper cap, but it is only Bostons that I can see.
Unless the amount of liquid in a bottle/jar is more than what you would go through in about a month or so, I would just leave them sealed as is. That's why I am doing 30 mL or 50 mL.
"Would storage in a wine fridge be too cool?"
That would be WAY cool!

But seriously, I think those are around 52 deg F, right? That is perfect. As others have said, store them topped off to minimize rxn with O2 (although there is very little of that in general).
Flavors I think are a crap shoot for long term storage...some will hydrolyze it seems over time. Mints are oils, so they probably will store long term fine. Fruits are esters, which can hydrolyze eventually. I don't what my current faves are chemically, but I will prob find out at some point. These are caramel, pralines, cream, chocolate. So I am making flavors as I go. Long term storage will be for unflavored high-nic juice.
To be on the safe side, too, I would wash the bottles you get with high-proof vodka and let them dry overnight or with a hair dryer. Bottles right from a producer may or not be totally clean.
Hope this helps!
Kurt
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