Been using this for a while for e-cig, love it!
I have purchased two bottles of this, and will keep using it for my e-cig juice.  I buy an 8 oz bottle of 100% PG double extra flavored e-juice (18 mg nic from a company who I don't know if I can mention, but they allow you to customize your juice and flavors and quantities) and then mix 3 parts VG to 1 part flavored PG with my nicotine, to get the ratio of VG/PG and nicotine I want (gets me to about 4.5 mg nicotine and about 75%VG/25%PG).  I make it for four people in my circle!  It is good stuff, and I end up only paying about 10-12 cents per ml of my e-juice this way, and it is much easier than trying to entirely make my own juice.
Rating: 5 stars