How I dial in my purge process
how do you know when the solvent is gone and the terpenes start evaporating?
You don’t. The “terpenes” are evaporating along with your solvent no mater how much you want that to be untrue. The extent of that evaporation certainly depends on your solvent of choice, and the conditions under which you’re evaporating.
OK, so how do you optimize your purge to hit state mandated residual solvent levels while retaining your desired volatiles?
By testing !!! preferably in-house so you don’t have…
There is a link in there to an inexpensive tool that even the home user can use to figure out “are we there yet?”
Validated by the same folks I use for third party testing
WhereAreTheStones:
The evaporative cooling effect of the butane can create condensation and potentially pull moisture into your extract.
Leaving the lid on loose and providing a safe source of heat can help prevent this.
Did you see ice/frost forming on the outside of the jar?
Dew point in London today is 8C which would certainly provide enough water IN THE AIR to potentially manage some in your BHO (remind us what temp your solvent of choice boils?).
…and while we are on the subject (solvent of choice), understand that the 99.99% n-butane you’re using is almost certainly not even 90%
No idea how many reading this might be involved open blasting but those who are should be concerned. I recently bought 4 little cans of butane that are available on-line. Every one of the cans is labeled as containing very high purity n-butane and every single one of the cans tested to be between 50 and 60% butane with the balance mostly being propane and isobutane.
Only one of the cans proved to be properly labeled based on it’s contents. The label describes contents as a “Triblend” of n-bu…
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