{"id":313,"date":"2023-01-10T01:39:07","date_gmt":"2023-01-10T01:39:07","guid":{"rendered":"https:\/\/graywolfslair.com\/?p=313"},"modified":"2023-04-06T18:16:05","modified_gmt":"2023-04-06T18:16:05","slug":"9-4-16-vacuum-purging","status":"publish","type":"post","link":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/","title":{"rendered":"9.4.16 Vacuum Purging"},"content":{"rendered":"\n

 Heating a concentrate to its melting point in a vacuum oven or chamber, so as to reduce surface tension enough for bubbles to escape, and then reducing the atmospheric pressure on it that are preventing the bubbles from escaping, is the fastest way we’ve found to remove residual solvents from a concentrate.<\/p>\n\n\n\n

The manner that we do that has changed some over the last decade sooo please allow me to share a quick trip down memory lane?  Here is our first vacuum chamber, a borosilicate bell with a small hot plate inside, in which we were able to process samples using 6″ petri dishes.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Early vacuum purging experiments<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Vacuum purged raw BHO extract<\/strong><\/p>\n\n\n\n


Next came our DIY vacuum chamber, whomped up out of an available pressure cooker to which we added plumbing and a 1 1\/2″ thick polycarbonate lid.  Initially we heated using a reptile mat , but ultimately switched to silicone heat pads controlled by a Variac variable transformer.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

DIY Vacuum chamber from pressure cooker<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Vacuum purged winterized BHO<\/strong><\/p>\n\n\n\n

Our next endeavor was to rebuild and re-engineer a used NAPCO vacuum drying oven.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Modified NAPCO drying oven<\/strong><\/p>\n\n\n\n

After sharing an R&D project to refine a vacuum oven for the cannabis market with Cascade TEK, our eyes were opened wide enough that we just had to have a couple for our very own selves and have never looked back, except for just that one little time, when Specialized Formulations purchased the AI Elite oven she had been testing.<\/p>\n\n\n\n

Here is Joe\u2019s Cascade TEK oven with Inficon residual gas analyzer attached: <\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

TVO-2 Cascade TEK<\/strong><\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

Inficon Residual Gas Analyzer<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Gas Analyzer readout<\/strong><\/p>\n\n\n\n

Here is some shatter Pharmer Joe made in a Cascade TEK TV02 vacuum oven.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Slab of vacuum purged BHO<\/strong><\/p>\n\n\n\n

Here is a picture of Carla\u2019s AI Elite oven.  See her evaluation under Equipment Testing:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

AI Elite 2.3 oven<\/strong><\/p>\n\n\n\n

If any of the above methods fit into your needs and budget, look in the DIY section for details:<\/p>\n\n\n\n

Meanwhile back to the present, we are only using the vacuum ovens, one use of which is purging residual solvents from a concentrate.  There are different thoughts on exactly how to do that while keeping the material in carboxylic acid state while retaining maximum monoterpene flavor and aromatics.<\/p>\n\n\n\n

The process also differs some with changes in solvent, like for instance butane and ethanol, because of the way they bind themselves to the essential oil mixture.  <\/p>\n\n\n\n

For purging BHO<\/u><\/strong>, here is how I do it: <\/p>\n\n\n\n

Place a thin film of the concentrate on parchment paper and place it in a vacuum oven preheated to 43C\/110F and bring up to temperature.  Raise the temperature as required until the concentrate is “just fully molten”, usually between 43C\/110 and 46C\/115F.<\/p>\n\n\n\n

If you are in a hurry, just start at 46C\/115F and skip the nuance.  <\/p>\n\n\n\n

Once the material is fully melted, start pulling the vacuum and when the material reaches a frenetic bubbling state, hold the vacuum at that level until it calms down, before continuing to reduce the oven’s partial pressure.<\/p>\n\n\n\n

Once you reach 10,000 microns\/-29.5″ Hg and the bubbling is calm, back fill with Nitrogen, remove the paddy from the oven and flip.  Repeat step one until the paddy no longer produces solvent bubbles at 10,000 microns\/-29.5″ Hg, back fill with N2 again, and remove to cool.<\/p>\n\n\n\n

For purging alcohol<\/u><\/strong> we do it basically the same way except alcohol and cannabis oleo resin love each other so much that at 46C\/115F it produces huge bubbles whose surface tension is so high that they resist bursting, sooo I increment up the temperature until they do more readily burst, usually closer to 52C\/125F.<\/p>\n\n\n\n

For difficult bubbles at 125F, we sometimes back fill enough with N2 to collapse them, then pull down again and resume purging.<\/p>\n\n\n\n

Boiling is defined as when the internal vapor pressure of a solvent exceeds the atmospheric pressure suppressing it from boiling, so when we remove that atmospheric pressure, the solvent boils at much lower temperatures.  A key issue when we are trying to limit decarboxylation or evaporating off some of the higher boiling point constituents, which also have high vapor pressures.<\/p>\n\n\n\n

Here is a chart showing the boiling point of ethanol at different vacuum levels by Skyhighler:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Ethanol boiling points under vacuum<\/strong><\/p>\n\n\n\n

Here’s one for Isopropyl:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Isopropyl boiling points under vacuum<\/strong><\/p>\n\n\n\n

An issue regardless of which solvent you are purging, is what altitude you are operating at, because while there is 760,000 microns\/29.92″ atmospheric pressure at sea level, as we gain altitude that pressure becomes less.  That atmospheric pressure drops off at approximately 1″ Hg per 1000 feet of altitude gained, but below is a more exact chart:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Atmospheric pressure at altitude<\/strong><\/p>\n\n\n\n

Lastly, you may ask why we limit the vacuum levels to 10,000 microns\/-29.5″ Hg, and the answer is that not only does it lower the boiling point of the solvent, it lowers the boiling point of the target elements that we are trying to hold on to, and some have such high internal vapor pressures that they evaporate away rapidly at temperatures considerably below their boiling points.<\/p>\n","protected":false},"excerpt":{"rendered":"

 Heating a concentrate to its melting point in a vacuum oven or chamber, so as to reduce surface tension enough for bubbles to escape, and […]<\/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":[71],"tags":[],"class_list":["post-313","post","type-post","status-publish","format-standard","hentry","category-9-4-15-pentane-hexane-heptane"],"yoast_head":"\n9.4.16 Vacuum Purging - GrayWolf's Lair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"9.4.16 Vacuum Purging - GrayWolf's Lair\" \/>\n<meta property=\"og:description\" content=\" Heating a concentrate to its melting point in a vacuum oven or chamber, so as to reduce surface tension enough for bubbles to escape, and […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/\" \/>\n<meta property=\"og:site_name\" content=\"GrayWolf's Lair\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/james.ellis.9081\" \/>\n<meta property=\"article:published_time\" content=\"2023-01-10T01:39:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-04-06T18:16:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Early-vacuum-purging-experiments-jpg.webp\" \/>\n<meta name=\"author\" content=\"GrayWolf\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"GrayWolf\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/\"},\"author\":{\"name\":\"GrayWolf\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#\\\/schema\\\/person\\\/40d6da885f58d0e767e114277e1c7d1c\"},\"headline\":\"9.4.16 Vacuum Purging\",\"datePublished\":\"2023-01-10T01:39:07+00:00\",\"dateModified\":\"2023-04-06T18:16:05+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/\"},\"wordCount\":863,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/graywolfslair.com\\\/wp-content\\\/uploads\\\/2023\\\/04\\\/Early-vacuum-purging-experiments-jpg.webp\",\"articleSection\":[\"9.4.15 Pentane\\\/Hexane\\\/Heptane\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/\",\"url\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/\",\"name\":\"9.4.16 Vacuum Purging - GrayWolf's Lair\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/graywolfslair.com\\\/wp-content\\\/uploads\\\/2023\\\/04\\\/Early-vacuum-purging-experiments-jpg.webp\",\"datePublished\":\"2023-01-10T01:39:07+00:00\",\"dateModified\":\"2023-04-06T18:16:05+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#primaryimage\",\"url\":\"https:\\\/\\\/graywolfslair.com\\\/wp-content\\\/uploads\\\/2023\\\/04\\\/Early-vacuum-purging-experiments-jpg.webp\",\"contentUrl\":\"https:\\\/\\\/graywolfslair.com\\\/wp-content\\\/uploads\\\/2023\\\/04\\\/Early-vacuum-purging-experiments-jpg.webp\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/9-diy-cannamed-production\\\/9-4-extraction\\\/9-4-15-pentane-hexane-heptane\\\/9-4-16-vacuum-purging\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/graywolfslair.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"9.4.16 Vacuum Purging\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#website\",\"url\":\"https:\\\/\\\/graywolfslair.com\\\/\",\"name\":\"GrayWolf's Lair\",\"description\":\"A Posse ad Esse. From Possibility To Realization.\",\"publisher\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/graywolfslair.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#organization\",\"name\":\"GrayWolf's Lair\",\"url\":\"https:\\\/\\\/graywolfslair.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/graywolfslair.com\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/14Logo-jpg.webp?fit=1199%2C594&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/graywolfslair.com\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/14Logo-jpg.webp?fit=1199%2C594&ssl=1\",\"width\":1199,\"height\":594,\"caption\":\"GrayWolf's Lair\"},\"image\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#\\\/schema\\\/person\\\/40d6da885f58d0e767e114277e1c7d1c\",\"name\":\"GrayWolf\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b6a82666edcc4cee81d4dcacb57c4736e1e1e1189e4d8dd8b04d9c39edaa1713?s=96&d=mm&r=r\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b6a82666edcc4cee81d4dcacb57c4736e1e1e1189e4d8dd8b04d9c39edaa1713?s=96&d=mm&r=r\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/b6a82666edcc4cee81d4dcacb57c4736e1e1e1189e4d8dd8b04d9c39edaa1713?s=96&d=mm&r=r\",\"caption\":\"GrayWolf\"},\"sameAs\":[\"http:\\\/\\\/graywolfslair.com\",\"https:\\\/\\\/www.facebook.com\\\/james.ellis.9081\"],\"url\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/author\\\/graywolf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"9.4.16 Vacuum Purging - GrayWolf's Lair","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/","og_locale":"en_US","og_type":"article","og_title":"9.4.16 Vacuum Purging - GrayWolf's Lair","og_description":" Heating a concentrate to its melting point in a vacuum oven or chamber, so as to reduce surface tension enough for bubbles to escape, and […]","og_url":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/","og_site_name":"GrayWolf's Lair","article_author":"https:\/\/www.facebook.com\/james.ellis.9081","article_published_time":"2023-01-10T01:39:07+00:00","article_modified_time":"2023-04-06T18:16:05+00:00","og_image":[{"url":"https:\/\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Early-vacuum-purging-experiments-jpg.webp","type":"","width":"","height":""}],"author":"GrayWolf","twitter_card":"summary_large_image","twitter_misc":{"Written by":"GrayWolf","Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#article","isPartOf":{"@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/"},"author":{"name":"GrayWolf","@id":"https:\/\/graywolfslair.com\/#\/schema\/person\/40d6da885f58d0e767e114277e1c7d1c"},"headline":"9.4.16 Vacuum Purging","datePublished":"2023-01-10T01:39:07+00:00","dateModified":"2023-04-06T18:16:05+00:00","mainEntityOfPage":{"@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/"},"wordCount":863,"commentCount":0,"publisher":{"@id":"https:\/\/graywolfslair.com\/#organization"},"image":{"@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#primaryimage"},"thumbnailUrl":"https:\/\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Early-vacuum-purging-experiments-jpg.webp","articleSection":["9.4.15 Pentane\/Hexane\/Heptane"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/","url":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/","name":"9.4.16 Vacuum Purging - GrayWolf's Lair","isPartOf":{"@id":"https:\/\/graywolfslair.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#primaryimage"},"image":{"@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#primaryimage"},"thumbnailUrl":"https:\/\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Early-vacuum-purging-experiments-jpg.webp","datePublished":"2023-01-10T01:39:07+00:00","dateModified":"2023-04-06T18:16:05+00:00","breadcrumb":{"@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#primaryimage","url":"https:\/\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Early-vacuum-purging-experiments-jpg.webp","contentUrl":"https:\/\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Early-vacuum-purging-experiments-jpg.webp"},{"@type":"BreadcrumbList","@id":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-16-vacuum-purging\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/graywolfslair.com\/"},{"@type":"ListItem","position":2,"name":"9.4.16 Vacuum Purging"}]},{"@type":"WebSite","@id":"https:\/\/graywolfslair.com\/#website","url":"https:\/\/graywolfslair.com\/","name":"GrayWolf's Lair","description":"A Posse ad Esse. From Possibility To Realization.","publisher":{"@id":"https:\/\/graywolfslair.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/graywolfslair.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/graywolfslair.com\/#organization","name":"GrayWolf's Lair","url":"https:\/\/graywolfslair.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/graywolfslair.com\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/01\/14Logo-jpg.webp?fit=1199%2C594&ssl=1","contentUrl":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/01\/14Logo-jpg.webp?fit=1199%2C594&ssl=1","width":1199,"height":594,"caption":"GrayWolf's Lair"},"image":{"@id":"https:\/\/graywolfslair.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/graywolfslair.com\/#\/schema\/person\/40d6da885f58d0e767e114277e1c7d1c","name":"GrayWolf","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/b6a82666edcc4cee81d4dcacb57c4736e1e1e1189e4d8dd8b04d9c39edaa1713?s=96&d=mm&r=r","url":"https:\/\/secure.gravatar.com\/avatar\/b6a82666edcc4cee81d4dcacb57c4736e1e1e1189e4d8dd8b04d9c39edaa1713?s=96&d=mm&r=r","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/b6a82666edcc4cee81d4dcacb57c4736e1e1e1189e4d8dd8b04d9c39edaa1713?s=96&d=mm&r=r","caption":"GrayWolf"},"sameAs":["http:\/\/graywolfslair.com","https:\/\/www.facebook.com\/james.ellis.9081"],"url":"https:\/\/graywolfslair.com\/index.php\/author\/graywolf\/"}]}},"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":319,"url":"https:\/\/graywolfslair.com\/index.php\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/9-4-14-4-the-cotton-candy-extraction-technique\/","url_meta":{"origin":313,"position":0},"title":"9.4.14.4 The Cotton Candy Extraction Technique","author":"GrayWolf","date":"January 10, 2023","format":false,"excerpt":"9.4.14.4 The Cotton Candy Extraction Technique We bumped into the Cotton Candy extraction technique by accident, while shaking out the original Mk III Terpenator.\u00a0 We were so taken by its properties, that we standardized the process. Our first serendipitous Cotton Candy extraction What is Cotton Candy extract? Cotton Candy extract\u2026","rel":"","context":"In "9.4.15 Pentane\/Hexane\/Heptane"","block_context":{"text":"9.4.15 Pentane\/Hexane\/Heptane","link":"https:\/\/graywolfslair.com\/index.php\/category\/9-diy-cannamed-production\/9-4-extraction\/9-4-15-pentane-hexane-heptane\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Crumble-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":630,"url":"https:\/\/graywolfslair.com\/index.php\/16-commercial-equipment\/16-1-producers-columns\/16-1-3-dirty-purge-contamination-threats-in-vacuum-purging\/","url_meta":{"origin":313,"position":1},"title":"16.1.3 DIRTY PURGE \u2013 Contamination Threats In Vacuum Purging","author":"GrayWolf","date":"January 11, 2023","format":false,"excerpt":"by Mary Babitz, Founder \u2013 Cascade Sciences In my years of working with engineers, the most interesting remains the Aerospace Contamination Engineer. \u00a0Working with them on vacuum \u201cbake-out\u201d systems, I learned just how important contamination risks are to NASA and other companies that send things into space.\u00a0 There\u2019s the obvious\u2026\u2026","rel":"","context":"In "16.1 Producers columns"","block_context":{"text":"16.1 Producers columns","link":"https:\/\/graywolfslair.com\/index.php\/category\/16-commercial-equipment\/16-1-producers-columns\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mary-Babitz.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mary-Babitz.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Mary-Babitz.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":547,"url":"https:\/\/graywolfslair.com\/index.php\/15-diy-equipment\/15-14-diy-vacuum-chamber\/","url_meta":{"origin":313,"position":2},"title":"15.14 DIY Vacuum chamber","author":"GrayWolf","date":"January 10, 2023","format":false,"excerpt":"Not only does a vacuum chamber or vacuum oven speed things up, but there are some things that you need one to accomplish.\u00a0 For those brothers and sisters whom are not bucks up enough to afford to buy one, consider building your own. Lots of ways to skin a Duck\u2026","rel":"","context":"In "15. DIY Equipment"","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\/Connected-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":642,"url":"https:\/\/graywolfslair.com\/index.php\/16-commercial-equipment\/16-2-equipment-tests\/16-2-6-testing-the-extract-craft-etoh-pro\/","url_meta":{"origin":313,"position":3},"title":"16.2.6 Testing the Extract Craft EtOH Pro","author":"GrayWolf","date":"January 11, 2023","format":false,"excerpt":"While I participated in beta testing Extract Crafts Turbo vacuum still back in 2016, alas I missed that opportunity when they were beta testing their EtOH Pro unit, so imagine my joy and amazement when I got a shot at testing their production unit. The opportunity came at a propitious\u2026","rel":"","context":"In "16.2 Equipment tests"","block_context":{"text":"16.2 Equipment tests","link":"https:\/\/graywolfslair.com\/index.php\/category\/16-commercial-equipment\/16-2-equipment-tests\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Engineered-packing3-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Engineered-packing3-jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Engineered-packing3-jpg.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Engineered-packing3-jpg.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Engineered-packing3-jpg.webp?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Engineered-packing3-jpg.webp?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":685,"url":"https:\/\/graywolfslair.com\/index.php\/18-0-the-vacuum-cooking-and-aluminum-bead-sous-vide-test-sled\/18-3-produce-food-concentrates-extracting-and-boiling-at-low-temperatures-under-vacuum\/18-3-1-test-13-f-extracting-wild-blackberry-concentrates-from-spent-pulp\/","url_meta":{"origin":313,"position":4},"title":"18.3.1 Test 13 F-Extracting wild blackberry concentrates from spent pulp","author":"GrayWolf","date":"January 11, 2023","format":false,"excerpt":"Wowza, shazam!\u00a0 What an intensely flavorful extract!! I extracted concentrate from spent wild blackberry pulp, after squeezing the berries for juice, that both Grayfox and I found delightful and my Le Cordon Bleu chef tester friend said it came as close to tasting exactly like the fresh black berries it\u2026","rel":"","context":"In "18.3 Produce food concentrates extracting and boiling at low temperatures under vacuum"","block_context":{"text":"18.3 Produce food concentrates extracting and boiling at low temperatures under vacuum","link":"https:\/\/graywolfslair.com\/index.php\/category\/18-0-the-vacuum-cooking-and-aluminum-bead-sous-vide-test-sled\/18-3-produce-food-concentrates-extracting-and-boiling-at-low-temperatures-under-vacuum\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Blackberry-concentrate-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Blackberry-concentrate-jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Blackberry-concentrate-jpg.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Blackberry-concentrate-jpg.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Blackberry-concentrate-jpg.webp?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/Blackberry-concentrate-jpg.webp?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":644,"url":"https:\/\/graywolfslair.com\/index.php\/16-commercial-equipment\/16-2-equipment-tests\/16-2-7-field-testing-the-medxtract-essential\/","url_meta":{"origin":313,"position":5},"title":"16.2.7 Field testing the Medxtract Essential","author":"GrayWolf","date":"January 11, 2023","format":false,"excerpt":"Sometimes good thangs come in twos and this was one of those occasions, cause shortly after publishing my results from testing Extract Crafts EtOH Pro, MedXtract in Canada, offered us their competing Essential vacuum recovery system under the same offer, to run like I stole it and just send back\u2026","rel":"","context":"In "16.2 Equipment tests"","block_context":{"text":"16.2 Equipment tests","link":"https:\/\/graywolfslair.com\/index.php\/category\/16-commercial-equipment\/16-2-equipment-tests\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/What-you-get-jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/What-you-get-jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/What-you-get-jpg.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/What-you-get-jpg.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/graywolfslair.com\/wp-content\/uploads\/2023\/04\/What-you-get-jpg.webp?resize=1050%2C600&ssl=1 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/posts\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/comments?post=313"}],"version-history":[{"count":3,"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/posts\/313\/revisions"}],"predecessor-version":[{"id":2003,"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/posts\/313\/revisions\/2003"}],"wp:attachment":[{"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/graywolfslair.com\/index.php\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}