[kingsolomon12]

I finally got my hands on some of the Everclear 190 (thanks to you guys) so though of giving the winterization process a try. I will be working with straight BHO and think I have the procedure almost down but defiantly have a few questions before I begin. I have gone through the tutorial on skunkpharm which has been very helpful but still have a few particular questions.
My basic strategy is to dissolve the bho in the Everclear at a ratio of roughly 1g bho to 30 ml Everclear - Is this a good ratio or should I be using more or less Everclear as I would like to use the least amount of Everclear necessary to reduce the amount of alcohol needing to be evaporated off ?
After the BHO is fully dissolved in the solution I should leave it in the freezer for up to 48 hrs. At this stage my question is, should my mixture be covered in the freezer or left open and is there any risk in doing this in terms of explosions ?
I should then filter the solution and hence remove the waxes that will have separated in the chilled solution.
As far as the final stage & purge goes what is the best method to evaporating off the alcohol and being left with a pristine absolute ? In the case of just evaporating off can this be done as simply as being left in a hot water bath ? As far as vacuuming off the alcohol, must it be partially evaporated off first or can the liquid solution go directly in the vac oven under full vac and at 100-110 F ?
Thank you guys in advance for any info & insight, I just want to make sure I'm giving myself the best shot at being safe and getting this right.

[JointOperation]

we do a gram to test how much is in our bho..

1 gram.. in 60-100mls.. freeze 48 hours.. filter. wiegh out remaining extract.. the last run we made 1 gram.. turned into .89 ..

this is how we figure out if its worth winterizing and losing mono and sequisture terps or if theres not alot of crap in it....

basically if theres more then 15% we will use a secondary solvent.. but mainly single solvent dewax and keeping your extraction temps low.. will avoid most of the nasties..

our best run single solvent dewax.. was 3% waxes/lipids/parafins.. and our non dewaxed just frozen .. indoor run hit 4% without any dewaxing..

outdoors has lots more wax then indoors ive found.. so outdoors gets dewaxed 99% of the time.. compared to indoors for me..

[Gray Wolf]

I just eyeball the ratio of oil to EtOH at about 10:1 by volume. The mixture should still act like alcohol when sloshed at 0F.

Put a lid on your container anytime you aren't working with it. Alcohol is hygroscopic and will draw moisture from atmospheric humidity.

Not much humidity in a 0F freezer, but there is transferring it, and it is flammable should you spill it and it find a source of ignition.

I wouldn't use a hot water bath with alcohol, because of the hygroscopic issue. Simply setting it aside for natural evaporation is the safest way to get rid of most of the alcohol without decarboxylation.

A seedling mat or fan will speed things up. A fan can also add dust and increases atmospheric moisture pickup.

If you end up with a beige liquid at the end that takes for forever to evaporate, it is most likely water, so I stick the dish in the freezer long enough for the oil to harden some on the bottom of the dish, and then simply pour off the excess water.

You can cold boil away the alcohol using a vacuum pump, but need one rated for chemical duty, or a cold trap before the pump, or change the oil in the pump as the level in the sight glass rises to upper limits. Sometimes several times with one extraction.

For shatter, I like to vacuum at -29.5" Hg and 115F until the solvent bubbles cease.

[JColtrane]

Well since we were talking about this yesterday, I'll chime in. The tek that I've developed to make "winterized shatter", I must give credit to RegisPhilburn1. Winterize oil, line dish w/ PTFE (oilslick or other), let evap on seed mat 24-48hrs. Fans are okay, but what I find is this added cooling on the top surface cause's wax problems in the vac stage. I like to let it evap until just a little water is left. Gentlely remove the ptfe and trans into the oven ... let oil get to temp (don't think high temps are bad ... even might be nessesary) and pull a slow vac, I usually pull over an hour (credit to Trimlific for that) and when it reach's 70% full vac, I'll open the vac wide open and let it pull to -29.9ish hg. Violent muffin occurs, and than from there it's impossible for me to explain any more ... gotta use that extracting hat, if you trust it ... it'll be the only one you need

BTW my purge in the vac after the "natural evap process" is anywhere from 1-4hrs w/ different flips and surface tranfers in the oven temps 115-120. We're not purging butane here, we're dealing with H2O mainly ... but watch out, cuz a lot of those mono terps hang out there

[HG23]

If the column and butane are ran at near Cryo temps is it still necessary to winterize? If you're going to winterize can you just eschew DI all together and just use regular ice on the recovery tank?

[kingsolomon12]

Originally Posted by Gray Wolf

I just eyeball the ratio of oil to EtOH at about 10:1 by volume. The mixture should still act like alcohol when sloshed at 0F.

Put a lid on your container anytime you aren't working with it. Alcohol is hygroscopic and will draw moisture from atmospheric humidity.

Not much humidity in a 0F freezer, but there is transferring it, and it is flammable should you spill it and it find a source of ignition.

I wouldn't use a hot water bath with alcohol, because of the hygroscopic issue. Simply setting it aside for natural evaporation is the safest way to get rid of most of the alcohol without decarboxylation.

A seedling mat or fan will speed things up. A fan can also add dust and increases atmospheric moisture pickup.

If you end up with a beige liquid at the end that takes for forever to evaporate, it is most likely water, so I stick the dish in the freezer long enough for the oil to harden some on the bottom of the dish, and then simply pour off the excess water.

You can cold boil away the alcohol using a vacuum pump, but need one rated for chemical duty, or a cold trap before the pump, or change the oil in the pump as the level in the sight glass rises to upper limits. Sometimes several times with one extraction.

For shatter, I like to vacuum at -29.5" Hg and 115F until the solvent bubbles cease.

Thank you guys so much for all the help and info, I think I'm just about ready to give this winterization a go. I do have one more question for you Gray Wolf. When your talking about eyeballing the ratio of oil to EtOH at 10:1 volume that is to say roughly 10ml EtOH per 1g of BHO ? That being said as I have been researching the spread people give is typically between 15-65ml per gram. If I'm understanding correctly your basically saying use as little as possible i.e. 10-15ml per 1g bho and just make sure upon being cold it still has a liquid consistency so as to separate the waxes and leaving as little alcohol as possible still needing to be evaporated off ?

[kingsolomon12]

Originally Posted by kingsolomon12

Thank you guys so much for all the help and info, I think I'm just about ready to give this winterization a go. I do have one more question for you Gray Wolf. When your talking about eyeballing the ratio of oil to EtOH at 10:1 volume that is to say roughly 10ml EtOH per 1g of BHO ? That being said as I have been researching the spread people give is typically between 15-65ml per gram. If I'm understanding correctly your basically saying use as little as possible i.e. 10-15ml per 1g bho and just make sure upon being cold it still has a liquid consistency so as to separate the waxes and leaving as little alcohol as possible still needing to be evaporated off ?

Any insight into the above question. I just want to make sure I compleatly understand before proceeding & the only thing I'm not 100% certain of is the EtOH mix with Everclear ratio as there is such a spread people recommend (10-65 ml per 1g BHO). Thanks in advance for any insight into this & sorry to be a pain in the ass guys...

[Dab Strudel]

Id say give it a shot. GW is gods word in my BHOusehold. If he says something id give it a go blindly, within reasonable parameters. He said by volume so that would be 10 ml of bho to 100 ml EtOH. Gotta figure out how much it takes to get 10 ml, or whatever measurements you see fit.

[kingsolomon12]

Originally Posted by Dab Strudel

Id say give it a shot. GW is gods word in my BHOusehold. If he says something id give it a go blindly, within reasonable parameters. He said by volume so that would be 10 ml of bho to 100 ml EtOH. Gotta figure out how much it takes to get 10 ml, or whatever measurements you see fit.

Appreciate the response, I think I'm ready to do my first winterization & can't thank you guys enough for all the help.

[Gray Wolf]

Originally Posted by kingsolomon12

Thank you guys so much for all the help and info, I think I'm just about ready to give this winterization a go. I do have one more question for you Gray Wolf. When your talking about eyeballing the ratio of oil to EtOH at 10:1 volume that is to say roughly 10ml EtOH per 1g of BHO ? That being said as I have been researching the spread people give is typically between 15-65ml per gram. If I'm understanding correctly your basically saying use as little as possible i.e. 10-15ml per 1g bho and just make sure upon being cold it still has a liquid consistency so as to separate the waxes and leaving as little alcohol as possible still needing to be evaporated off ?

Yup, pretty much that.