Re. Long term storage
A quote from Kurt (ECF):
"As a professional chemist, I would recommend storing long term in glass. Nic in high concentration will slowly dissolve plastic, and PG will leach plasticizers from plastic. VG might too.
Sun’s fridge issues were with flavored juices stored six months, some of which were not even opened. I believe they were early Johnson Creek. The culprit was probably water in the JC recipe. I think decomp would have happened anyway, regardless. I do not think it was necessarily the fridge itself.
A sealed glass bottle of unflavored nic juice will not allow water in. The only reactant here is O2, which if there is little head room is negligible. O2 is very slightly soluble in PG or VG, and will be present in trace quantities in the solution no matter what you do, but it is not enough to make any appreciable change in 100 mg juice, even if it all reacts.
I use glass bottles from specialtybottles.com for storage of my unflavored 35-100 mg VG nic juice. The ones with eurodropper inserts, since I use them for syringe dispensing. Just stick an 18 gauge blunt needle through the center hole. With these inserts, accidental spill, which is a DISASTER with 100 mg juice, is eliminated. I use 50 mL bottles (although given how fast I go through them, I should have used 30 mL), fill them almost to the rim, put in the insert and screw on the cap.
I store them in the freezer. As long as they are brought to room temp before opening them, the liquid will not absorb much water from the air. I pull out one bottle at a time for juice making. I just pulled out a 100 mg VG bottle stored since January, and it has not even discolored compared to the original very slightly yellow, as in VERY slightly yellow. In my freezer, PG and VG do not freeze (I have some DV PG juice stored too), nor do they expand. VG becomes VERY thick, like rubber cement at the temp of my freezer. I have not tested for nic content, but the juices I make now are in my opinion no less potent than when I got the juice fresh.
Cool, dark, and dry is appropriate for a bottle opened and being actively used for DIY. Sealed is sealed, and extreme cold almost eliminates the kinetics of any O2 reactions and mold or bacteria growth, which is also almost eliminated by nic itself, PG or VG.
From what I know about these chemicals, I expect the juice to last certainly much much longer than 24 months, and probably many years.
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Alkuperäinen postaaja KirjaSusi
