Oil Purge Technique

[Hashmasta-Kut]

 

I purge my oil a bit different these days, and it always comes out brittle (rock like but shatterable) hard or very close to it.

tools etc: frying pan, water, stove, pyrex pie plate, glass plate to cover the pie plate, metal tin.


I start by doing a hot water bath, (hot tap water) to get rid of the liquid butane, then I take it inside and put it on the stove to keep it hot for about a half hour or a bit more. I turn the heating element on a couple times, just to maintain the heating of the hot water bath. It should be very hot, not boiling, just very close.

For effective purging to cover the pyrex pie plate with a lid is best. I use a glass dish which fits excellently, this allows the oil to remain much hotter on its surface, as well as underneath.

I remove the lid occasionally and check the oil out, not sure if its needed to be remove often to allow the gas to escape, i kind of doubt it.

Next, I scrape it up into a metal tin to heat treat it, but I do it more mildly than the method I describe in my purge link. HERE

I put it on the upside down glass pie plate thats still quite warm, and carefully heat it with a low flame, just enough to gently remove the butane. It's a hard to describe process, but it involves tipping the oil sideways etc... to penetrate into it from the top with A low heat flame to get all parts of the mix hot without overheating it all.

A small amount of external heat is applied to the tin as well but not a heck of a lot. . I used to heat it much hotter, until it went quite liquidy, but don't anymore, and the oil is harder with a slightly more stony effect.

You can cook bubbles off the top and out of the butane for hours, but you dont have to, and actually those bubbles arent butane when removed at this stage, but actually thc volatiles gassing out of the hot oil mix.

It's necessary to heat it to a certain degree to remove the last trapped butane but carefull heating is the key to achieving rock hard oil.

The whole extraction is do-able in about an hour.

A result of the butane being in the oil causes a slight haze or cloudiness to it. You can see minute traces of this before doing the final purge, and the oil tastes harsh b-cuz of it. after carefully and gently removing the cloudy traces, then the oil is completely tasty.


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