A grower looking to launch your own brand of cannabis products to sell directly to consumers
A distributor looking for better lab-scale equipment to improve your processes
A product manufacturer exploring the possibilities of adding value to products before moving them along the supply chain
A retailer thinking about launching an in-house artisanal brand of cannabis products
...a rotary evaporator is an essential tool. And an investment in quality is an investment in the quality of your product.
The right tools can transform your businesses and help it grow
The cannabis plant does have inconsistent and sometimes unpredictable qualities. Depending on the strain, the taste, smell (terpenes), and THC or CBD, potency can vary greatly. These inconsistencies will make their way to the end product, which ultimately leads to unhappy customers.
You want to produce a consistent product. It just makes business sense. To do that, you have to isolate and separate the CBD and THC components, and then infuse them into your product. If you’re going to be using a spray dryer to create cannabis powders, you first need to make an oil that’s refined and clean. Through distillation, rotary evaporators are an indispensable tool for THC or CBD extraction.
The industry standard cannabis rotary evaporator
You’ve been on the front lines, witnessing how quickly the cannabis industry has evolved and changed. So has extraction technology. The cannabis industry is transforming and moving toward more powdered cannabis products. If your brand is among those leaders, you’ll need the supporting lab-scale equipment to develop your process.
Benefits of a rotavap in the cannabis industry include:
Removing residual ethanol at a lower cost than other tools
Achieving faster evaporation rates, which is beneficial if you're aiming for lower THC concentrations in edibles or if you're distilling cannabis oil to eventually create CBD powder
Easily creating extracts with consistent doses, which is crucial for medicinal cannabis users
More environmentally friendly, with easy solvent recovery
With the right controls, rotary processes have excellent repeatability, for a more consistent product
It's also easily scalable, which makes it very adaptable to your business needs and growth
And efficiently removes extraction solvents through evaporation, without any negative effects on your end product
We already partner with cannabis product manufacturers
In the process of your cannabis product preparation, you want to achieve the purest concentrates. Yamato has been delivering innovative, industry-leading instruments to pharma, food, biotech, and other fields for more than a century. Labs in the academic, clinical, pharmaceutical, food and beverage, and environmental industries have long trusted Yamato technology to do their best work. And now, the cannabis industry is on board.
Yamato rotary evaporators are among the most well-engineered rotary evaporators in the world. These models can effectively remove solvents from concentrates and perform a seamless, cost- effective post-extraction refinement. Yamato offers a handful of rotary evaporator models that are perfect for lab scale product development and process validation.
Rotary evaporators 101
A rotary evaporator, or rotavap, is a piece of equipment that efficiently and gently removes volatile solvents from your product through evaporation.
The main components of a rotavap are:
An evaporation flask, which contains the sample material
A motor that rotates the flask
A vacuum-sealed vapor pathway, which draws vapor off the sample
A vacuum system, which reduces pressure in the evaporator
A heated fluid bath (usually water), which gently warms the sample
Another flask for solvent recovery, to collect condensed vapor after distillation
How does the magic happen?
This essential piece of equipment is a fixture in most labs. It’s the go-to tool for controlled solvent removal under a vacuum. That’s what it does in the cannabis industry. It separates residual solvents from cannabis concentrates. It uses gentle rotation as a filtration method, along with gentle warming to:
remove unwanted contaminants, or;
isolate a desired cannabinoid
At the risk of getting a bit technical, during the refinement of the cannabis plant extract, a rotary evaporator helps efficiently remove residual ethanol or butane at a lower cost than other tools by lowering the boiling point of a solvent and reducing exposure to heat (which is very important for temperature-sensitive compounds). Essentially, the flask rotates, and shapes a thin film in negative pressure conditions through heating. It evaporates. Then the vapor is condensed, liquified, and recovered for separation.
Here are the basic steps:
The vacuum pump reduces pressure in the rotary evaporator.
As this happens, the boiling point of the solvent (ethanol or butane) is lowered. Usually the distilling flask is filled up 50%, and the water bath temperature is 30 - 40°C.
The condenser temperature is controlled by a recirculating chiller, which is set to between -10 - 0°C.
Once set points are reached, the distillation flask is rotated, which creates a thin film on the upper surface of the glass cylinder.
This increases the solution surface area, and speeds up the solvent evaporation rate.
As the ethanol vapor evaporates, it will condense and collect into the evaporating flask.
In the cannabis industry, rotary evaporators are commonly used in post-extraction refinement or recovery after ethanol extraction. They're often used in the winterization process, which removes lipids and waxes from a cannabis extract at a low temperature. Other uses include turning a raw cannabis flower into high-grade THCA isolate, or it can even be calibrated to make oils and tinctures. In fact, using rotary evaporation for extraction is considered to provide the purest concentrations of Tetrahydrocannabinol (THC) of any industry method.
If your business is expanding into product development, or growing (and needs more lab-scale instruments), we’re the right partner.
We're eager to talk about your application.