{"id":277,"date":"2023-01-10T00:20:08","date_gmt":"2023-01-10T00:20:08","guid":{"rendered":"https:\/\/graywolfslair.com\/?p=277"},"modified":"2023-04-04T20:03:37","modified_gmt":"2023-04-04T20:03:37","slug":"9-4-7-2-subzero-extraction","status":"publish","type":"post","link":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-7-ethanol-extraction\/9-4-7-2-subzero-extraction\/","title":{"rendered":"9.4.7.2 Subzero extraction"},"content":{"rendered":"\n<p><strong>9.4.7.2 Subzero Extraction<\/strong><\/p>\n\n\n\n<p>For ya&#8217;ll brothers and sisters looking to process larger quantities at a time, we recommend that you consider the Subzero Ethanol process, by which either fresh cut or dry material is packed in bags, which are subsequently placed in a stainless vessel at ambient temperature, through which ethanol at&nbsp; &gt;-50C or lower, is pumped in a circle through it, as it is being agitated, dissolving and removing the essential oils.<\/p>\n\n\n\n<p>Temperatures that low are typically achieved by adding dry ice to the bath of ethanol.<\/p>\n\n\n\n<p>A pump is required that can operate at those temperatures, and due to low seal elasticity at those temperatures, typically a mag drive pump without seals is required.<\/p>\n\n\n\n<p>At those temperatures, full extraction of 25 to 30 pounds of material takes about 10 to 15 minutes, before being passed through a 0.5 micron PTFE coated polyester felt sock filter, available from places like Duda Diesel.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"525\" height=\"450\" src=\"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-Extractor-jpg.webp?resize=525%2C450&#038;ssl=1\" alt=\"\" class=\"wp-image-1438\" srcset=\"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-Extractor-jpg.webp?w=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-Extractor-jpg.webp?resize=300%2C257&amp;ssl=1 300w, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-Extractor-jpg.webp?resize=600%2C514&amp;ssl=1 600w\" sizes=\"auto, (max-width: 525px) 100vw, 525px\" \/><\/figure>\n\n\n\n<p><strong>Subzero system using cryogenic mag drive pump<\/strong><\/p>\n\n\n\n<p>Here is a conceptual of a system that uses either nitrogen or air pressure to transfer the liquid from the storage tank through the shower head into the second tank of plant material, and then a gain to blow it from the process tank back to the storage tank.&nbsp; Pneumatic pressure can also be used to transport it to the next next process. &nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"525\" height=\"409\" src=\"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-extractor2-jpg.webp?resize=525%2C409&#038;ssl=1\" alt=\"\" class=\"wp-image-1439\" srcset=\"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-extractor2-jpg.webp?w=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-extractor2-jpg.webp?resize=300%2C233&amp;ssl=1 300w, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Subzero-extractor2-jpg.webp?resize=600%2C467&amp;ssl=1 600w\" sizes=\"auto, (max-width: 525px) 100vw, 525px\" \/><\/figure>\n\n\n\n<p><strong>Subzero extractor using Nitrogen pressure to cycle<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>9.4.7.2 Subzero Extraction For ya&#8217;ll brothers and sisters looking to process larger quantities at a time, we recommend that you consider the Subzero Ethanol process, [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[67],"tags":[],"class_list":["post-277","post","type-post","status-publish","format-standard","hentry","category-9-4-7-ethanol-extraction"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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DIY Equipment&quot;","block_context":{"text":"15. DIY Equipment","link":"https:\/\/graywolfslair.com\/index.php\/category\/15-diy-equipment\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Nitrogen-powered-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Nitrogen-powered-jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Nitrogen-powered-jpg.webp?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":646,"url":"https:\/\/graywolfslair.com\/index.php\/16-commercial-equipment\/16-3-plant-tours\/16-3-1-subzero-scientific\/","url_meta":{"origin":277,"position":1},"title":"16.3.1 Subzero Scientific","author":"GrayWolf","date":"January 11, 2023","format":false,"excerpt":"One of Graywolf\u2019s Lair new columns is about my visits to local cannabis equipment manufacturers, and I started with Subzero Scientific, handily located in Gresham, OR.\u00a0 I started with Subzero Scientific because they are not only a major player in the cannabis equipment arena, but Gresham is close to Portland,\u2026","rel":"","context":"In &quot;16.3 Plant tours&quot;","block_context":{"text":"16.3 Plant tours","link":"https:\/\/graywolfslair.com\/index.php\/category\/16-commercial-equipment\/16-3-plant-tours\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/CNC-and-saw2-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/CNC-and-saw2-jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/CNC-and-saw2-jpg.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/CNC-and-saw2-jpg.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/CNC-and-saw2-jpg.webp?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":281,"url":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-7-ethanol-extraction\/9-4-7-4-alcohol-extraction-overview\/","url_meta":{"origin":277,"position":2},"title":"9.4.7.4 Alcohol Extraction Overview","author":"GrayWolf","date":"January 10, 2023","format":false,"excerpt":"Ethanol is one of the oldest solvents used to extract cannabis concentrates and due to its heavily taxed cost and hit and miss availability around at least the US, Isopropanol has gained popularity. Ethanol and Isopropanol moledules FDA classifies both solvents as Class III, but also classifies Ethanol as GRAS,\u2026","rel":"","context":"In &quot;9.4.7 Ethanol extraction&quot;","block_context":{"text":"9.4.7 Ethanol extraction","link":"https:\/\/graywolfslair.com\/index.php\/category\/9-diy-cannamed-production\/9-4-extraction\/9-4-7-ethanol-extraction\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Wax.gif?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Wax.gif?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Wax.gif?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":291,"url":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-9-alkane-extraction\/9-4-9-2-propane-butane-extractions\/9-4-9-2-2-overview-of-bho-extraction\/","url_meta":{"origin":277,"position":3},"title":"9.4.9.2.2 Overview of BHO extraction","author":"GrayWolf","date":"January 10, 2023","format":false,"excerpt":"The target constituents in cannabis that we covet, are aromatic hydrocarbons soluble in the simple Alkanes n-Butane and n-Propane, as well as their isomers Isobutane and Cyclopropane.\u00a0 BHO extraction involves passing one of those solvents, or a mixture through the plant material and dissolving the trichomes containing the target elements.\u2026","rel":"","context":"In &quot;9.4.9.2 Propane\/Butane extractions&quot;","block_context":{"text":"9.4.9.2 Propane\/Butane extractions","link":"https:\/\/graywolfslair.com\/index.php\/category\/9-diy-cannamed-production\/9-4-extraction\/9-4-9-alkane-extraction\/9-4-9-2-propane-butane-extractions\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mk-VIII-conceptual2-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mk-VIII-conceptual2-jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mk-VIII-conceptual2-jpg.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mk-VIII-conceptual2-jpg.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mk-VIII-conceptual2-jpg.webp?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":279,"url":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-7-ethanol-extraction\/9-4-7-3-giant-tea-ball-extraction\/","url_meta":{"origin":277,"position":4},"title":"9.4.7.3 Giant Tea ball extraction","author":"GrayWolf","date":"January 10, 2023","format":false,"excerpt":"Giant Tea Ball Extraction A fast low tech way to extract a large amount of mixed trim fast, with a low equipment investment.\u00a0 Check out this giant tea ball from a restaurant supply harvesting low grade trim for topicals, using denatured alcohol.\u00a0 If you use denatured alcohol, use one denatured\u2026","rel":"","context":"In &quot;9.4.7 Ethanol extraction&quot;","block_context":{"text":"9.4.7 Ethanol extraction","link":"https:\/\/graywolfslair.com\/index.php\/category\/9-diy-cannamed-production\/9-4-extraction\/9-4-7-ethanol-extraction\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":576,"url":"https:\/\/graywolfslair.com\/index.php\/15-diy-equipment\/15-28-extractor-column-design\/","url_meta":{"origin":277,"position":5},"title":"15.28 Extractor Column Design","author":"GrayWolf","date":"January 11, 2023","format":false,"excerpt":"A discussion of extraction column design would not be complete without first discussing subzero extraction.\u00a0 As the LPG cannabis extraction process has evolved, we\u2019ve learned that extracting cannabis at subzero temperatures in the range of -30\/-70C or lower, we can minimize the pickup of molecules larger than our C-10 through\u2026","rel":"","context":"In &quot;15. 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