The pg does vape at a slightly lower temp than hash oil. So it will want to evap first. This would not be a problem if the pg and oil would stay in solution together. But as it sits idol the pg will rise to the top leading to thinner (oil wise) hits when you start.
I would highly recommend to all to stop using the pg and get some peg, you need to use much less (stronger vapes) and it stays in solution (no maintenance).
PEG is what the O-Pen and other MMJ cartridge manufactures use. They just cut their CO2 extracted oil more than it needs to be.
Happy Vapes to all
I am not sure what concentrate you are using but I don't have any problem with my PG USP separating from my concentrate. I warm the concentrate slightly and gently mix in the PG USP. I have a 30mL bottle of a mixture that has sat for a couple months now and there has been no separation.
I must say, I have had it separate only when it was not warmed before mixing. It has to be warmed and mixed in a small cup or pan.
I just use a metal measuring cup, put some concentrate into it, place the cup on a coffee cup warmer. Once the concentrate begins to "melt" I then add the PG USP and gently stir. After mixing I quickly remove the cup from the heat.
Here is the 30mL bottle of my pre mixed e-cannabis oil.
I prefer to use variable voltage batteries and the clearomizers to be rebuildable with dual heating elements. Like the iClear16 and iClear30.
For a pen vapaorizer I like the eGo C Twist 650 mAh VV. For an advanced portable vaporizer I like the innokin SVD (pictured above). The metal tip on the iClear30 prevents the sweet flavor so you really cannot taste the sweet of the PG USP, all I taste is ganga!
I am not sure about PeG, I thought I read somewhere it is used in laxatives. PG USP works perfect for me, I certainly found what I was looking for to make vaping oil an awesome experience.