Question. Do you think it would be beneficial in any way to put the e-juice in a ziploc with a weight of some sort to submerge it in water prior to the ultrasonic? I'm just concerned with water getting inside the bottles. Probably would't happen since the caps are tight, or perhaps wrap each bottle in saran wrap?
I realize this thread is a bit older, and there's a part III now (which I'm still reading through) which is probably more current, but I wanted to address the comment about the ziplock baggie.
I decided I wanted to try to speed steep a few of the juices I ordered and received from vendors, but because several of them had labels that would probably be ruined by the ink running in the ultrasonic soak, I decided to place the group of them in a ziplock baggie before placing them in the ultrasonic for steeping. It seemed to do the trick well, keeping the labels dry while still doing the ultrasonic steeping.