The world of cannabis extractions and concentrates - either made with or without solvents - is riding high at this moment among users around the world. One of these concentrates, the well known BHO (Butane Honey Oil), has become especially popular among dabbing lovers because of two main reasons: in one hand, the extract quality ? when is done properly ? is excellent, with high cannabinoids content and no plant debris. On the other hand, this extraction technique provides outstanding yeilds as well, obtaining product with very high percentage of the cannabinoids, terpenes, flavonoids, etc? contained in cannabis trichomes.
BHO extractions and vacuum purging
However, this resin extraction method using butane presents two major disadvantages: the first one has to do, logically, with safety. Using butane gas can be very dangerous because of its highly flammable saturated hydrocarbon which causes a lot of incidents due to incorrect handling. The second major disadvantage is the solvent purge, that is, to remove the substance we have used to obtain the extract (in this case, butane) from the extract itself, which is common in all solvent extractions.
Extraction masters soon realized that the best way to get excellent results is by using closed loop extraction systems to extract the resin and vacuum pumps and ovens to remove the solvent from it. But what exactly are these devices and how do they help us to purge the BHO?