Duane- DIY question. Since my nic is already 12mg 100%VG is it still necessary to break it down into smaller bottles?
If they are in plastic I'd think about transferring to glass if your storing it for a long time. I didn't go crazy with my nic and small bottles, I've got some in 250 ml and 500 ml bottles, the thing is the amount of air, you only want a little bit of air in the bottle, I like to have about 1/4 inch. ( that's not much oxygen considering the atmosphere has only 21% oxygen.)
When I go to use my bigger bottles, I will have kept the smaller sizes and will divide them up at some point into smaller bottles. Warming the nic, and transferring it, then re-chilling it should have no real impact on it, freezing it is like hitting the pause button, kind of, but really it's like hitting a super duper slo mo button. At room temp nic is good for 6-12 months or maybe even longer at 100 mg/ml strength, at 12 mg/ml, it should be good for 1-2 years or more is kept cool and out of light. In the freezer, no one knows how long it will keep, I've read many posts claiming 5-6 year old nic is just fine.