Shatter Vacuum Pressure

Good evening I could use some help regarding vacuum pressure on my shatter runs any input would be greatly appreciated

The method that works best for me, is to heat my extract up in a thin film on parchment until it just melts, and then bring up the vacuum until the bubbling flurries, and then hold it at that level until the bubbling calms down. I then repeat until I reach 10,000 microns/-29.5"Hg without excessive bubbling, and then backfill with N2 and flip the paddy. Repeat until there are no more solvent bubbles, with only the fine CO2 bubbles in evidence.

My extracts typically melt between around 43C/110F and 46C/115F.

Thanks so much for the knowledge sir ,really appreciate the extensive answer and will definitely take notes, I will be doing my first official ClosedLoop Extraction run next week to start producing Live Resin and I’m thinking I’ll be messaging you alot if of course you don’t mind,just awaiting my dry ice and butane again thanks for your knowledge PS I’m not sure what (back fill or what NP even is) I’ll apologize for my ignorance now regarding these procedures

So you don’t know how to solvent extract safely, orwhat nitrogen is, but you have a closed loop and a business card?
This should go well. Please, spend time researching the topic of extracting with volatile solvents before attempting.

I get the feeling you’re in over your head, take that business card down bud...

3DXtractions said:

Thanks so much for the knowledge sir ,really appreciate the extensive answer and will definitely take notes, I will be doing my first official ClosedLoop Extraction run next week to start producing Live Resin and I’m thinking I’ll be messaging you alot if of course you don’t mind,just awaiting my dry ice and butane again thanks for your knowledge PS I’m not sure what (back fill or what NP even is) I’ll apologize for my ignorance now regarding these procedures

Click to expand...

You're welcome!

BHO extraction is not to be taken lightly, so suggest starting with safety. Here are a couple links to BHO safety discussions:


Next there is the issue of LPG quality and you didn't mention your selection or source. All n-Butane, Isobutane, an n-Propane are not created equal in quality, with some more contaminated with longer chain hydrocarbons than others.

Here is an article on Mystery Oil and tests on different brands, as well as one on how to remove it from your LPG before extracting with it. It uses a Terpentor vis a vis a Lil Terp, but the principles are the same. We typically use Apis Labs Instrument Grade 99.95%, which we re-distill down to 99.998%. Below about <-30C we use a 70:30 or a 50:50 mix:


Now that location, location, location and safety has been covered, as well as preparing your LPG, the fun part begins. Be safe and enjoy!

Do I infer you are using the Source Turbo for winterizing? If you extract below about -30C, winterizing may not be necessary and will strip terpenes.

What will you be using to purge the residual LPG after extraction.

PS: N2 is Nitrogen and LN2 is liquid nitrogen. Both are sometimes used in the process. I use N2 for backfill and LN2 through a counter flow heat exchanger to chill the LPG before injection through pre frozen material in the columns.

Some processes use N2 to force the liquid through the columns, and are subsequently burped off before recovery. I find it easier to just heat an auxillary pot of LPG mix and use to add head pressure on the chilled (33/35F) supply tank. As previously mentioned, a gas mixture will not thicken as much and will have more natural head pressure, so won't need a push.