Homogenous grinding of cannabis - efficient extraction of supercritical CO2

The FRITSCH cutter PULVERISETTE 19 with variable speed and cyclone is an effective tool to receive both: an optimal homogenized sample of a large number of cannabis plants and a method for the extraction of CO 2 for the production of cannabis oil. See how easy it can be to prepare cannabis.

Supercritical CO 2 extraction (Supercritical CO 2 extraction site:http://www.careddi.com/brc/66.htm)
The most common method for extracting active ingredients from the cannabis plant is supercritical CO 2 extraction. At high pressures above 31°C, CO 2 enters a "supercritical" state. It now acts as a solvent. CO 2 still has a liquid density, but can fill the entire chamber like a gas. This is ideal for extraction because it does not cause denaturation or damage to the product.

CO 2 extracts cannabinoids and terpenes from the plant. The result is a safe, high-quality, pure oil that can now be processed for a variety of therapeutic uses.

The producers of these cannabis oils naturally want to make the extraction process as efficient as possible. This means: the highest yield of ingredients in the shortest amount of time.

Homogenous grinding of cannabis
The requirement for this is an optimal homogeneous grinding of the cannabis plant. The ideal tool for this is the FRITSCH PULVERISETTE 19 - a universal cutter for fine grinding and precise pulverization.

Perfect grinding chamber geometry
In the cutter, the principle of scissors is used to chop the sample between the rotor knife and the secondary knife in the grinding chamber to produce the desired final fineness. the unique grinding chamber geometry of the FRITSCH universal cutter PULVERISETTE 19 ensures minimal dead space. The progressive cutting geometry between the rotor knife and the stator knife allows active transfer of the sample material. It does not get stuck anywhere. The special airflow is the basis for fast, clog-free work and quick residue-free cleaning. In addition, the use of a stainless steel high-performance cyclone ensures high throughput.

With the help of an industrial vacuum cleaner and a high-performance cyclone, a negative pressure is generated in the grinding chamber. The material is fed through a funnel into the FRITSCH PULVERISETTE 19. different sieve cartridges determine the final fineness of the cannabis sample.

The unmilled cannabis plant material has a bulk density of 100-125 g/l, while the milled cannabis material has a bulk density of 225-250 g/l.

The grinding homogenizes the sample optimally and allows more material to be filled into the extraction column. Of course, this also significantly increases the yield per extraction.

We worked with a cannabis producer in California, USA, to investigate which grind level meant the most efficient extraction method. The best results were obtained with a 2 mm screen. Other screens can be used for different fractions.

More facts about PULVERISETTE 19
The described FRITSCH Universal Cut Grind PULVERISETTE 19 is also used to grind samples for potency testing or to check the material for pesticide residues. In order to adapt the cutting performance optimally to the sample, the rotor speed can be adjusted between 300 rpm and 3000 rpm.

As with all plants used in analytical laboratories, simple cleaning is required and the FRITSCH PULVERISETTE 19 is based on the concept of "clean design": the grinding chamber can be opened completely and all grinding parts can be disassembled without any tools, making cleaning easy and fast. Cross-contamination can be avoided.

The FRITSCH PULVERISETTE 19 is also available in a 316L stainless steel version for use in the pharmaceutical sector.

Learn how to obtain homogenized samples and how to quickly and easily prepare cannabis plants for effective cannabis oil extraction - just read the entire lecture and watch the video.