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Thread: THC Resin Extraction

  1. #1
    Cuda Guest

    Default THC Resin Extraction

    Since so much time, labour, and cost has gone into the production of each plant, growers do not overlook utilization of the "shake" or leaves. Extraction involves the process of removing the essential oil, THC resin, from the leaves remaining on the plant and those removed during pruning.

    This is accomplished through the use of a solvent in which the oil will dissolve, which is later separated from the plant material by passing it through an appropriate filter. The best solvent found to date is chloroform. It is non-flammable, which makes it safer to handle than ethanol. Further, it has a low boiling point (61 C., 142 F.), and a residue after evaporation of .0005 percent. This low residue percentage means that virtually no trace solvent remains to contaminate the oil and cause an aftertaste, which is usually a problem encountered with ethanol unless time-consuming distillation processes are used.

    Another important concern is that chlorophyll is relatively insoluble in chloroform, eliminating the heavy "green" taste that always results from ethanol extractions. To initiate the extraction process, the leaves must be dried thoroughly. This can be done by placing them on fairly absorbent paper, such as newsprint, in a good sunny spot near a window. (Fresh newsprint paper can be obtained in most art supply stores.

    The lead content of ordinary newspapers makes them unsuitable for this purpose.) The leaves are then turned over every few days to ensure complete drying. When they are sufficiently and completely dried, the leaves should be brittle and crumble easily between the fingers. They are then placed in a blender or food processor and ground to a fine powder.

    Studies have shown that to achieve 90 percent extraction of the oil, the plant material must be powdered. ["Studies"?! Don't ask... -ed.] This is because nearly as much oil is contained in non-glandular internal tissues as is produced by the glandular tri-chomes. Next, a filter (a coffee filter will do) is placed over a clean Pyrex beaker or Corning Ware dish. The plant material is piled about halfway to the top of the filter, and the rest of the material (if any) is saved in an air-tight container. Pour approximately 200 ml of chloroform into the blender or food processor and slosh it around the sides. This rinses out any oil that may have adhered to the container's walls.

    Chloroform is poured from the blending container over the plant material until it reaches the top of the filter (adding more chloroform if needed). When the chloroform has completely filtered in to the beaker or dish, this process is repeated by adding chloroform until it again reaches the top of the filter. Two extractions of the same plant material are usually sufficient to remove all of its THC oil.

    The plant material is discarded; the same procedure is repeated until the beaker or dish becomes full of solvent. Now the beaker or dish is placed on an electric stove or hot plate and heated slowly to a very low boil.

    When the chloroform is being evaporated, the area must be completely ventilated! In the early days of medicine, chloroform was used as an anaesthetic until harmful side effects [such as liver damage!] were discovered, so it is clear that extreme care must be used when evaporating this solvent.

    You could also use Acetone instead. After the solvent has been evaporated, the same procedure is repeated until all of the plant material has been treated. The oil is collected and stored in a glass pipette. These can be obtained at a scientific supply and are inexpensive. The oil is drawn into the tube (this may be easier if the oil is first heated a bit), and the tube capped at both ends. Resin is best stored inside airtight containers and in an area of low light and humidity.



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    Last edited by LBN; 24-04-13 at 04:18 AM. Reason: spaced it out a bit

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  3. #2

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    happy days, and you can always use any left over for a wee kidnapping or 2
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  5. #3
    Master Poet Guest

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    Errrrr, I think you'll find this information on the forum already.

  6. #4

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    Does chloroform not make you pass out ? Thought it would be hard to get hold of ?
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  7. #5
    Master Poet Guest

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    Use ACETONE.

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    Yeah had a look on the net you can't buy it any more without a prescription/licence I'm sure if you tried hard enough you could get it though but there are plenty of other decent solvents.
    I've made BHO a few times (got leaves from m8s) with lighter fluid defenety worth it as most folk chuck it in the bin! Would like to invest in a vacuum chamber/pump to make shatter as well you can get a cheap pump from FleaBay and make the chamber yourself
    Last edited by Brutalkillshot5; 24-04-13 at 10:38 AM.

  10. #7

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    LOL, just checked ebay and you can get it there, wife better behave her self.
    Last edited by VMAX; 24-04-13 at 10:38 AM. Reason: 5 times the price too.

  11. #8
    Cuda Guest

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    Quote Originally Posted by Poet View Post
    Errrrr, I think you'll find this information on the forum already.
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    Minnesota recently passed marijuana legalization; however, they've outlawed smoking. Looks like Rick Simpson Cannabis Oil is going to be high in demand.

  13. #10

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    Hi, chloroform is a restricted agent here in the UK and it is really difficult to get hold of other solvents for making oil; can't get Everclear or any other food grade alcohol for that matter, other than isopropanol, but I am hesitant to use this because of residue (been reading conflicting stuff about iso use which has really confused me). Is acetone safer than ISO? Does it perform like chloroform as far as residue goes? Thanks so much for any help or alternative suggestions.

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