Let’s take a look at the way the short path wiped film Rotary Evaporators works. Where other methods employ solvents to aid the extract material move or flow through the process, these systems take advantage of the melting points of cannabinoids instead.
These compact systems are set up with a feed vessel sending extract material into a heated evaporation vessel. Inside this evaporation vessel is a rotating wiper blade that evenly distributes the extract material on the vessel walls. The extract material only spends a short length of time on the wall to limit heat exposure and any degradation to the material.
The close proximity in the condenser towards the heated vessel wall supplies a short path for your extract to travel to. Hence the name, short path distillation process. Because the wiper system moves the extraction material down through the vessel, it evaporates towards the condenser which converts it back to some liquid. This liquid is then collected at the bottom and is also now a distillate.
Heavier material like the chlorophyll, sugars, salts, and wax fractions are not able to evaporate off of the top of the evaporation vessel wall and in addition they travel, via the wiper blades, in to a separate container which is also towards the bottom. Another and chilled evaporator captures the terpenes in their own individual flask.
The Short Path Distillation Process – The Short Path Distillation employs a setup that utilizes the identical principles, just with no wiper system to distribute the extraction material.
Instead, a heated flask is when the extraction material is fed. Gradually, increased heat is applied for the extract material in the feed flask. A vacuum is additionally applied to help in drawing the vapors up into the fractionating tubing. From the fractionating tubing the contents then hit the condensing tube, where fractions take separate paths.
Just like the wiped film process, the load of each fraction determines the collection flask.
To boost product refinement, each process can have the extract material run through them many times. Similar to the wiped film process, this setup can also be relatively compact and lends well to multiple devices working simultaneously in a smaller space.
Benefits of Short Path Distillation – Flavor and “experience” are clearly more consumer-centered advantages, but also for producers, there are many more which come with employing either a quick path distillation process or short path wiped film distillation process.
One production advantage is something called “continuous feed” which is ideal for making large volumes of product for extended time periods with greater consistency.
Where other extraction processes use heated beakers, continuous feed also allows for a greater level of scalability in your production which just isn’t most of a choice with batch mode stills.
High evaporation rates enable more distillates to get captured while the relatively low processing temperatures (130-180°C) bring about the truth that there aren’t any solvents necessary to move the extract material through the process.
Most significantly, this technique will separate cannabis into high concentrations of THC and CBD distillates. Actually, short path distillation can result in cannabis distillates which are 99% pure. So when you are attempting to create a pure CBD product, as an example, choosing the short path distillation process is among the best methods you can use.
The compact form of short path distillation systems ensures they are a perfect choice to use in operations where large quantities of multiple strains must be extracted. Lastly, these machines are easy to use and therefore are largely automated in 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 would be the purest and many potent form of the compound, and they get some benefits like being completely odorless and tasteless. This can be great if you work with these compounds in foods or beverages, for example, as it will not alter the taste in any respect.
However, an increasing body of scientific reports have found that full-spectrum extracts have several benefits over isolates. The number of compounds found in cannabis work together to form what’s referred to as entourage effect, which enhances the effectiveness of the medicinal properties.
Because of this, you may want to accept pure isolates produced from the short path distillation process and use reverse chromatography methods which will result in a full-spectrum extract. This can be especially useful uuubfc creating very effective CBD products, for example, as the end product can have no traces of THC, and can continue to have most of the other beneficial compounds found in cannabis.
The beauty with using Molecular Distillation is you can isolate each specific compound, then combine them together in unique blends that can yield highly specific results. The options are endless when you use technology as precise as short path distillation.