Best Practices

How To Achieve Full Control Of The Rosin Extraction Process

Rosin extraction is a unique process

The Basics Of Rosin Extraction

Rosin extraction relies on temperature and pressure to extract oils without the use of solvents. Essentially, the moisture within the flower (or hash) vaporizes. According to the folks over at Pure Pressure, one of the leading producers of new wave rosin extractors on the market, Rosin is the cannabis oil and concentrate that is created when you apply heat and pressure to cannabis product…Liquefies and extrudes the trichomes and cannabinoids out of the material that you are pressing. It really is the most simple extraction method. The trichome heads rupture to produce a shatter, butter or oil containing the desired compounds like cannabinoids and terpenes. Rosin extraction is a relatively recent innovation within the marijuana industry, and techniques are continually evolving through experimentation. Why does a perfect extraction require a period of experimentation? Each element in the extraction process exerts considerable influence over the makeup and quality of the final product. The following ideas on controlling the rosin extraction are based on the use of a commercial extractor. Understandably, the more primitive the device, the less control one has over the elements. Understanding the role that each of the below factors plays, can direct a more educated experimentation process.


Given the importance of steam to the entire rosin extraction, the humidity of the plant matter is important. Without moisture, there is no vapor, and final yields suffer. An adequately hydrated cannabis flower can have a dramatic effect on the extraction. As a guideline, the flower should have a relative humidity 55 to 62 percent.


The temperature of the process influences the consistency of the extraction. It is an important aspect of the rosin process because it changes the viscosity of the natural cannabis oils, allowing for extraction from the plant material. Typically this means pressing butter at the lower end of the temperature spectrum, anywhere between 140 to 180 F. Some industry experts recommend between 200 to 230 F for flowers. Oils and shatters use much higher temperatures, up to 250 F. Producers need to be wary of relying on higher temperatures during pressing as it can sometimes damage the important medicinal compounds. Some terpenes are especially sensitive to high temperatures, anything above 240F might increase their volatility in the air. Once exposed, the terpenes may simply evaporate.

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