Let’s check out how the short path wiped film Rotary Evaporators works. Where other methods employ solvents to aid the extract material move or flow with the process, these systems take advantage of the melting points of cannabinoids instead.
These compact systems are set on top of a feed vessel sending extract material in to a heated evaporation vessel. Inside this evaporation vessel is a rotating wiper blade that evenly distributes the extract material to the vessel walls. The extract material only spends a short length of time on the wall to limit heat exposure as well as any degradation to the material.
The close proximity from the condenser towards the heated vessel wall provides a short path for the extract to go to. Hence the name, short path distillation process. Since the wiper system moves the extraction material down through the vessel, it evaporates to the condenser which converts it back to a liquid. This liquid will then be collected in the bottom and it is now a distillate.
Heavier material like the chlorophyll, sugars, salts, and wax fractions are unable to evaporate off the surface of the evaporation vessel wall and in addition they travel, using the wiper blades, right into a separate container which is also in the bottom. A different and chilled evaporator captures the terpenes in their own flask.
The Short Path Distillation Process – The Short Path Distillation employs a setup which uses exactly the same principles, just minus the wiper system to distribute the extraction material.
Instead, a heated flask is where the extraction material is fed. Gradually, increased heat is used for the extract material within the feed flask. A vacuum is also applied to assist in drawing the vapors up into the fractionating tubing. Through the fractionating tubing the contents then hit the condensing tube, in which the fractions take separate paths.
As with the wiped film process, the load of every fraction determines the collection flask.
To improve product refinement, each process can hold the extract material run through them many times. Just like the wiped film process, this setup is additionally relatively compact and lends well to multiple devices working simultaneously in a smaller space.
Benefits of Short Path Distillation – Flavor and “experience” are obviously more consumer-centered advantages, but also for producers, there are lots of more which come with employing either a quick path distillation process or short path wiped film distillation process.
One such production advantage is something called “continuous feed” which is perfect for making large amounts of product for longer time periods with greater consistency.
Where other extraction processes use heated beakers, continuous feed also enables a greater amount of scalability to your production which just isn’t much of an alternative with batch mode stills.
High evaporation rates enable more distillates to become captured as the relatively low processing temperatures (130-180°C) contribute to the fact that there aren’t any solvents necessary to move the extract material from the process.
Most significantly, this technique will separate cannabis into high concentrations of THC and CBD distillates. In reality, short path distillation can bring about cannabis distillates which are 99% pure. If you are trying to create a pure CBD product, for instance, working with the short path distillation process is one of the best methods you can use.
The compact design of short path distillation systems means they are a perfect choice to utilization in operations where large amounts of multiple strains must be extracted. Lastly, these machines are easy to use and they are largely automated within their function.
Isolate versus Full-Spectrum – Using the short path distillation or wiped film distillation process leads to pure isolates – whether that be THC, CBD, or other cannabinoid or terpene you may be opting to distill.
Isolates are definitely the purest and most potent kind of the compound, and they also have some benefits like being completely odorless and tasteless. This is great if you are using these compounds in foods or beverages, for example, as it does not change the taste in any respect.
However, a developing body of scientific reports have found that full-spectrum extracts have many benefits over isolates. The multitude of compounds found in cannabis work together to form what’s referred to as entourage effect, which enhances the strength of the medicinal properties.
Because of this, you may want to accept pure isolates made out of the short path distillation process and utilize reverse chromatography methods which will result in a full-spectrum extract. This can be especially useful uuubfc creating successful CBD products, as an example, as the end product can still have no traces of THC, but will continue to have many of the other beneficial compounds found in cannabis.
The sweetness with using Molecular Distillation is that you simply can isolate each specific compound, then combine them together in unique blends which will yield highly specific results. The options are endless when you use technology as precise as short path distillation.