Just wanted to report back some results I have had with long term storage in the freezer.
I purchased 100mg in bulk in October 2011 from MFS. I cut it down to 50mg with PG. I am strictly a PG vaper, never use VG. Just my preference. Anywho, I store my cut to 50mg in vodka bottles, taped around the bottle lid, in my spare freezer in my garage. I pull out the bottle and top off a 4oz bottle for weekly DIY as needed.
Purchased the bromyl blue test kit this week. I have 6 750mL bottles stored in the freezer, and will add 3 bottles to that when I get my next 100mg shipment in two days. Yep, stocking up for vapepocalypse. 3 of those bottles are from 10-11 and the other 3 bottles are from Nov '12. There is a ever so slight yellow tinge to the 3 older bottles when you compare them to the newer bottles from a few months ago, but you have to look really really close to see it. Did the bromyl blue test yesterday on the nic from October '11, and the result was 51mg nicotine. I think it is safe to assume that my cut to 50mg nic that has been in the freezer for 17 months is still as strong as when I purchased it. No foul smell, no rancid liquid. It is as good as the day I received it!
Just wanted to
throw out there another testimony to long term storage and having no problems with it! The freezer I store it in rarely gets opened, unless I am digging out more nicliquid to fill up my smaller in house bottle. So it does sit fairly undisturbed. But all PG and long term storage have been no problem here for 17 months. I will continue to test it every 6 months or so and see where the mg are prior to using it.
Hope this helps!