What is BHO extraction

Daily archive: BHO

Concentrates are slowly but surely arriving in the stoner mainstream. The triumphant advance of the rosin method in particular has ensured that more and more consumers in this country are jumping on the dabbing train. Certainly to the delight of the straightening iron industry. But with the Rosin method you quickly reach your limits. Straighteners are not really effective, especially since they are only suitable for smaller quantities, which can quickly become annoying. Large rosin presses are extremely expensive. There are also inexpensive methods that enable a good yield, such as the slug, but if you want to process a sack of trim or a few more buds, you simply cannot avoid solvent extraction.

There are countless instructions on the internet for liquid gas extraction with butane or dimethyl ether (D.M.E). However, many of them leave questions unanswered or even contain false statements that result in an inferior product or even endanger your health. This text should protect you from that. It helps beginners to avoid the most common mistakes right from the start and even “professionals” will surely find one or the other tip to optimize their way of working and improve their product.

The preparation

Important steps that ensure an optimal end result take place even before the extraction. The better the material used, the better the end result will be. Do not expect that you will get a nice, aromatic extract with ancient trim (but it will still “pop” ...). So if you want an optimal end result, then you should also use a high quality starting material. If it is already clear before the harvest that the material is intended for extraction, then we already have an article for you that gives you a few tips for cultivation. As soon as the material is “ready”, you should either extract it immediately or freeze the material for later. The longer it is stored, the inferior the extract becomes. Freezing slows down or pauses the aging process. You can freeze it in an airtight bag or already filled in your extractor. When filling, there are a few rules that should be kept in mind. The material should be roughly chopped, preferably by hand. “Grinding” is not recommended. Too many fibers and cells are torn open, which will lead to an increased lipid and chlorophyll content in the extract. The material is then filled into the extractor. Optimal tamping is an advantage here. The material should be pressed down loosely so that there are hardly any air holes. If there are too many gaps, the liquid gas can evaporate again at these points and thus completely loses its ability to dissolve. Only liquid gas can dissolve! However, it should not be tamped too tightly so that the flow is not impeded. So you have to find a “healthy middle ground”. After filling, the extractor with the material belongs in the freezer, ideally for 24 hours. If this is not possible due to the space available, you should extract directly after filling. If possible, the gas should also go straight to the freezer. The colder everything is, the better the result will be. Should you with D.M.E. want to extract, freezing is essential to significantly reduce the chlorophyll content.

The extraction

When the time for extraction comes, you should prepare everything beforehand. Set up everything you need before the extractor and the gas out of the freezer. Everything should be ready so that you can start immediately after the cold chain is interrupted.The most important rule of all: gas extraction only takes place outdoors. In the open air with extensive ground. Working on the open window is not sufficient! The gas is heavier than air and collects on the ground, where it waits for the right spark even hours after it has been extracted and can lead to a devastating explosion. If you don't have the opportunity to extract outdoors, don't do it!It is also important that you use heat-insulating and non-slip gloves. The extractor gets very cold during the extraction process and frostbite is possible. The amount of gas should be kept as low as possible in order to keep pollution from so-called “mystery oil” as low as possible. The higher the quality of the gas, the lower the level of contamination, which consists of production residues and the internal coating of the can. However, these cannot be completely prevented with open blast extraction. Therefore, the priority should not be to achieve a yield that is as 100% efficient as possible, but rather to not use more gas than necessary. Try to keep the loss as low as possible through optimized work afterwards! The use of PTFE film is definitely recommended. The miracle material polytetrafluoroethylene (“Teflon”) is used to line your collecting vessel. It is 100% resistant to butane and D.M.E., at the same time it has excellent non-stick properties so that you don't have to “scrape” later. Simply line a bowl with the foil, fix the edges e.g. with clothespins and spray in there. Later the extract can be taken with the foil for further processing. The extraction itself is actually the most spectacular step. The gas bottle is attached to the top and emptied into the extractor with a little pressure. With glass extractors you can see very well where the liquid gas is, with metal or plastic extractors you can see it from the ice formation. As soon as it gets down, the solution steps out and all you have to do is aim properly. If you want to use another can in between, then it is best to hold a finger on the hole while you change. When the desired amount of gas has been let through, you close the hole again with your finger and let it run a little further. Then you can put the extractor aside. Tip: Empty it immediately, because if the material is still moist, it is easier to remove from the extractor. Now you can take care of the solution. Please never forget that you now have a fair amount of liquid, extremely flammable gas in front of you. Smoking, open fire, unsafe electrical systems and closed rooms are still completely taboo! The gas must now evaporate. This just happens over time; this can be accelerated with a hot water bath in which you can put your bowl. You should make sure that you take them out of the shell in good time to prevent the extract from warming up. As long as it is a liquid solution, a hot water bath is not a problem, as the butane can only be heated up to the point of evaporation. As soon as there is only a small puddle left, let the rest evaporate at the ambient temperature. At some point the worst is out and there is (almost only) pure extract on your PTFE.


However, you should avoid consuming this extract as much as possible, because there is still a considerable amount of gas in it. This has to go now. The fastest and most reliable way to do this is with a vacuum chamber. Instructions can be found here. But even without a vacuum, you can dry your extract quite reliably. The most important factor is time. Don't get impatient! Give your extract at least a week, or even better, more time. Ideally, you have made sure that the concentrate layer is spread over a relatively large area and that it is thin. The thicker the material, the more gas it holds in itself. You should ensure a dust-free atmosphere, e.g. with a nylon stocking that you pull over the vessel. You then pack the whole thing in a dark, ventilated environment and leave it alone there for the time being. Warmth definitely helps with drying, but is always associated with a loss of terpene, so you have to weigh up.

Then you can enjoy your extract.

Note: This text is for documentation purposes only. Cannabis is still illegal in most countries. If you are not satisfied with it, become politically active!

Posted on Instructions | Tagged BHO, Butane, Dabben, Dexso, Extraction, Open-BlastLeave a comment