About the Ethanol Extraction Process
Pre-Chill TanksPre-chill tanks are filled with Ethanol
Cryo-ChillerEthanol is brought down to -40º C using Cryo-chiller and jacketed Pre-chill Tanks
Spray Ethanol into ExtractorSpray Ethanol from Pre-chill Tanks to Extractor, soaking biomass
Circulate Extractor EthanolCirculate the Extractor Ethanol to finish run time
Filter and StorePump out extract solution thru filter assembly into storage tank
- 1 – Pre-Chill Tanks
Pre-chill tanks are filled with Ethanol
- 2 – Cryo-Chiller
Ethanol is brought down to -40º C using Cryo-chiller and jacketed Pre-chill Tanks
- 3 – Spray Ethanol into Extractor
Spray Ethanol from Pre-chill Tanks to Extractor, soaking biomass
- 4 – Circulate Extractor Ethanol
Circulate the Extractor Ethanol to finish run time
- 5 – Filter and Store
Pump out extract solution thru filter assembly into storage tank
Note: Ethanol source pump used for step 1 and storage tank, not provided
HeaterHeaters are turned on, heating up water in jacket
Vacuum PumpVacuum is pulled on system
DistillerSolution is pumped into distiller.
MixerOnce liquid level gets above propeller, turn on mixer
EvaporationEthanol vapors evaporate out of the solution
CondensationEthanol vapors are condensed from vapor to liquid
Liquid EthanolLiquid ethanol is collected
Final ExtractExtract is pumped out of distiller once desired concentration is achieved
- 1 – Heater
Heaters are turned on, heating up water in jacket
- 2 – Vacuum Pump
Vacuum is pulled on system
- 3 – Distiller
Solution is pumped into distiller.
- 4 – Mixer
Once liquid level gets above propeller, turn on mixer
- 5 – Evaporation
Ethanol vapors evaporate out of the solution
- 6 – Condensation
Ethanol vapors are condensed from vapor to liquid
- 7 – Liquid Ethanol
Liquid ethanol is collected
- 8 – Final Extract
Extract is pumped out of distiller once desired concentration is achieved
How Does Coldfinger Ethanol Extraction Work?
A perforated basket is filled with ground herb and suspended above a pool of solvent. A condenser is positioned above the basket and cooled. The condenser is designed so that solvent vapor will condense and drip in an even rainfall pattern over the basket of herb so it will extract evenly and thoroughly.
Gentle heat is applied to the solvent causing it to vaporize. The vapor liquefies on the condenser and drips from the drip points. A continuous cycle of solvent vaporizing from the bottom of the vessel, liquefying and dripping across the basket slowly leaches the soluble constituents from the herb. The extract laden solvent flows out of the perforations at the bottom of the herb basket and into the bottom of the extractor.
The extract has a much higher boiling point than the solvent so it stays in the bottom of the extractor while the same solvent continuously vaporizes, liquefies, and flows through the herb bringing extracted constituents with it, and then liquefies again. While gentle heat is the primary means for getting the solvent to vaporize and distill through the herb, vacuum can also be used to enhance the process. Vacuum lowers the boiling point of the solvent so less heat can be used and/or the distillation/extraction can be done faster. Deep vacuum allows the Coldfinger process to be accomplished as low as 105F. Even without vacuum, the inverted Coldfinger condenser hanging down into the boiling flask allows for lower temperature distilling well below the boiling point of the solvent.
What Type of Extract Does Coldfinger Extraction Produce?
Coldfinger allows the user to do a very thorough extraction using a small amount of solvent which yields a thick, concentrated extract. If the desired end product is an alcohol-based tincture, which is very common in herbal medicine, flavorings, and perfumes, this is the best method.
— From Lead Extractors —
Working with Eden Labs has been a rare but singularly positive experience. In addition to providing innovative products and excellent service, they have unique leadership for the broader industry. I feel that we are all quite lucky to have the Eden team working in the cannabis space. It’s a joy to see them bridging cool professionalism and great care for others, pushing toward a brighter future.
Our Vision is Safer, Healthier Extraction Systems, Technology and Products for Human Consumption.
GMP Compliant Systems
- All Eden Labs products and processes are designed in accordance with the Good Manufacturing Practice standards of the US Food and Drug Administration. These regulations require that manufacturers, processors, and packagers of drugs, medical devices, some food, and blood take proactive steps to ensure that their products are safe, pure, and effective.
Superior Material Specification and Productivity
- 25-Year History of Customer Success Built on Superior Engineering
- Components UL Listed for National Safety Standards
- ASME-Certified Manufacturing of Vessels
- All CO2 and Ethanol Systems Include a 3-Year Warranty