2.91 grams product from 20 grams blue herer trashy inner/under-buds So heres the result of my vac purge. I didn't know what I was doing, so I did a variety of stuff. Dunno how to check the pressure on my setup since I have no gauge, but I just keep it on during the run to ensure it being at full vacuum. After scraping it off the pyrex, and after the first initial hot water wash, I first just simply stuck it in there to be vacuumed for 5 minutes, 5 minutes, 10 minutes, and finally 20 (four runs). The fifth session I released vacuum every 2 minutes in a 10 minute period. Finally I heated the paper in a 150 degree oven for 10 seconds before the 6th and 7th sessions of 5 minute vaccing, and finally the paper spread flat over a warm heating pad for a minute until the oil glistened then thrown into a final 8th vac session. After the final vac I threw the BHO into the fridge for a few minutes before snapping these shots. In the first two purges the butane swelled to 5 times its size; by the fifth it would only raise to about double and by the end it barely raised except in pockets. By the third run I began taking the lid off and taking the BHO out in between, instead of just letting the system run without the little rubber circle over the puncture hole in the lid (removing the rubber breaks vacuum and allows air to flow in, cycling and refreshing it) Not at all sticky and very malleable. Little worried about all the little bubbles, but they havn't come out after 8 purges, some heated, so I don't think that is butane left in there. Probably not putting it in the fridge anymore afterwards, just in case theres some butane left escaping. Thoughts/tips/ideas/comments?