my nicotine is in a 50/50 mix.
it seems liquid in the freezer.
i forgot to put it in small bottles.
must i bring it to room temp before i pour some out?
i worry that extra freeze/thaw cycles aren't great.
Neither PG, VG or any mixture of the two will undergo a phase change to solid at residential freezer temperatures; they will simply become more viscous.
I always let my nic base come to room temperature before opening the bottle. Reason: Condensation. Take a bottle out of the freezer and it will almost instantly form frost on the outside, and if you take the cap off, it will form inside too. It pulls moisture from the air. I do not want and unknown amount of water mixing with my base.
However, I generally only remove and open a bottle of 100 mg base once. I mix down the whole 120 ml bottle into vapable strength (in my case currently 13 mg/ml). This yields about 7 bottles of vapable base, and all but one of these go back in the freezer. One stays out to get vaped as is, or mixed with flavorings in 30 ml bottles.
My flavored liquids use no more than 3-5% flavorings so I don't worry about the reduction in nic strength or the change in PG/VG ratio that adding flavorings to my vapable base produces.