"Did anyone tested VG or PG glycerine extraction with ultrasonic assistance? It seems more efficient for ejuice. And what about glycerine with ultrasound extract mixed with concentrate oil? You could have the taste from cold ultrasound glycerine technic that preserve terpens and potency from concentrate? Like this: https://www.hielscher.com/preparation-of-cannabis-glycerin-extract-with-ultrasonics.htm Thanks Alex "