So you’ve gotten your BHO Extracted, it’s been purged with warm water, then with a heat pad, and it’s ready to go, right?
Before answering that, please take a moment to get acquainted with our redundant red friend The Disclaimer.
With that out of the way, the answer is that it really depends on you. As I stated in my previous post, very little is known about the amount of butane residue left in BHO after it’s been purged using the above method.
This is why taking an extra step and Vacuum Purging is highly recommended, and really worth your while.
A Vacuum Chamber is an enclosure from which air, and gasses are removed with a pump. Vacuum Chambers have many uses, but for our purposes they will be used to remove any additional butane from extracted BHO.
There are many brands of Vacuum Chambers on the market, so things can tend to get a bit confusing. Models from 2 quart, to 10 Gallon; Single, and two stage pumps either separate or included. I personally use a 3 Gallon by Best Value Vacs in conjunction with a two stage, 3 CFM Pump. More on pumps in another article.
So which is the best for BHO Extraction? Well, that depends how much, and how often you’ll be extracting BHO.
If we’re talking anywhere from 1-10 grams at a time, then a small chamber (less than two gallons) and a single stage pump is all that you’re going to need. Any more than that and you should definitely invest in a larger chamber. The kits are always less expensive than buying each component separately.
So what is the exact process involved in BHO Purging?
It’s actually a lot simpler than some may think. Basically, you’ll need to add your BHO into the chamber on a non-stick surface. The lid is then applied, and the pump is attached. Next, the chamber is placed on an electric burner, or griddle and the heat is closely monitored, more on that in a bit. When the pump is on, pressure is adjusted with a valve.
The BHO will begin to ‘muffin’ out, or expand while it’s being purged. You don’t want it to touch any surface within the chamber that is not non-stick, so when it gets too big the pressure is released.
How long do you need to vacuum purge BHO?
There are too many variables to give a specific answer to that question. The times will vary wildly based upon how much BHO is being purged. Basically, the BHO is Vacuum Purged until it no longer expands, or expands very little under pressure.
Most use a heating pad, or electric burner to speed up the process. Heating your Vacuum Chamber while purging isn’t an absolute must, but I strongly recommend it considering the fact that it significantly increases the speed of the purge.
A big concern with heating BHO while it’s being purged is burning it. You want to be extremely cautious with your temperatures, if they get much above 160 things can get out of control in a hurry. For your first purge, keep the heat at 115-120F. I recommend using an Infared Thermometer as pictured below to closely monitor heat.
These things are invaluable, especially when you get to the more advanced stages of BHO Making and want to make Shatter, Honeycomb, BHO Oil and even hard waxes. More on these in a later posts.
Here is a look at what happens when excessive heat is involved:
Here is an awesome video of a guy going through the process. Make sure to read the description in the “About” section of the video for answers to many of the questions you might have.
Vacuum purging BHO is highly recommended to produce the purest wax. As many impurities as possible will be removed using this method, which equates to purer, healthier BHO for anyone who consumes it.
Happy Dabbing!
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