While I'm inclined to agree that a handheld homogenizer would be the best route. Would you be able to provide a solution that's initially a little more cost effective?
Recently I purchased buddy e-cig style vaporizer and decided to stop buying pre-filled cartridges of concentrate and just fill my own. I went with a wax/propylene glycol solution and that seems to work well but I noticed that after a day or so of sitting still it started to separate. I know...