The most versatile and trusted commercial ethanol extractors and distillers.
Coldfinger™ enables herbal extraction, fine liquor distillation, steam distillation, cold ethanol and solvent recovery.
Fast, Clean, and Versatile Ethanol Extraction Fit to Your Size and Scale.
Labs processing large volumes of botanicals with a many potential add-ons.
Extracting botanicals through distillation in extremely efficiently. Suited for Warm and Cold Wash methods of extraction, steam distillation, solvent recovery and spirits distilling. The extractor can be used as a highly-efficient vacuum oven for dehydrating or decarboxilating botanicals.
100 and 500 Gallon Capacities
Smaller labs or R&D. Ideal for businesses processing material for bulk extract or specific compounds.
Coldfinger units make it possible to extract and separate compounds like terpenes, cannabinoids, and so much more.
Tests have shown this process gives better yields than all other methods. In some cases, analysis of extracts made with this method has revealed compounds previously unknown to the material - leading researchers to conclude other methods either ignore or destroy certain constituents.
12, 22 and 50L Capacities
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.
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.