Image courtesy of Root Sciences
The close proximity of the condenser to the heated vessel wall provides a short path for the extract to travel to. Hence the name, short path distillation process. As 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 is then collected at the bottom and is now a distillate.
The Short Path Distillation Process
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 onto the vessel walls. The extract material only spends a short amount of time on the wall to limit heat exposure and any degradation to the material.
There are several places to purchase short path distillation equipment from which, along with the kind of capacity they are capable of, can vary in price.
Isolates are the purest and most potent form of the compound, and they 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 will not alter the taste in any way.
In practice, and by way of example, the raw oil (often referred to as “crude” oil) from the cannabis plant will first be extracted via the use of a primary extraction system. Depending on a number of factors, that crude oil will have a THC/CBD concentration typically between 60-80%.
For mid to large scale processors, it is more common to find a wiped film distillation apparatus in the laboratory. Wiped film is a variation of short path in the sense that the chemistry is the same, but the technique and equipment are slightly different. Often the biggest differences between short path and wiped film distillation are the ability to operate the unit in a continuous mode and the use of rolling wipers in the heating step to create a thin film around the evaporator flask.
Making Cannabis Distillate, Why All The Craze?
A simple example of distillation is the process of purifying water. Heating water to 100°C (212°F) will vaporize the H20 molecule, leaving behind any undesirable compounds. Rapidly cooling this water vapor causes it to re-condense into distilled, purified water.
Making cannabis distillate is accomplished by using an apparatus that heats a solution to a specific temperature in order to vaporize a specific compound within the solution without destroying it, then re-condenses the vaporized compound back into a liquid effectively separating it from the rest of the ‘undesirable’ compounds in the original solution.
The cannabis plant, by nature, possesses inconsistent and unpredictable qualities. Depending on strains, and the evolution within strains, the plant’s taste, smell and THC/CBD potency may vary greatly. These inconsistencies will inevitably flow into any end product, thereby causing undesirable variations.
What is wiped film distillation
and why you need it
We believe in being partners, not just suppliers. Today’s cannabis and hemp leaders want to build faster, protect their brand and expand their business. We ensure our wiped film distillation equipment goes beyond the standard purification expectations, so our customers can make top tier products in a competitive space.
For large scale distillation volume
Wiped Film Distillation
For mid-level distillation volume
For large scale distillation volume
For entry level distillation volume
Distillation is a post-processing method performed after the main solvent extraction of the biomass. There are several distillation methodologies that may be utilized, but they all aim to achieve the same goal – consistent purified product. Wiped film distillation is a type of short path distillation that utilizes temperature and pressure variables to volatilize and re-condense constituents based on their boiling point and molecular weight allowing you to purify and concentrate cannabinoid fractions from raw cannabis or hemp extract.