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Show us your grind!

edited August 2017 in CO2 Extraction

Grind size is crucial to getting full yields quickly. What size are you grinding?

Comments

  • When we grind our bud we like it to be corn kernel or smaller. More along the lines of granola.

  • Here's a picture:

  • 1.4-1-7mm, don't have a pic atm

  • We use a Hammermill tabletop grinder with a 3mm mesh screen

  • all about surface area.......

  • The team at OutCo in El Cajon, CA have studied in detail, the impact of particle size (and uniformity/size distribution) on CO2 extraction yield. They have a new App note that will be published in LCGC Mag & The Analytical Scientist (online). I can also email a copy if you'd like to read it. [email protected]

  • I'd love a copy Barry!! Thanks for sharing with the Community, too!

  • @Barry_FritschMilling said:
    The team at OutCo in El Cajon, CA have studied in detail, the impact of particle size (and uniformity/size distribution) on CO2 extraction yield. They have a new App note that will be published in LCGC Mag & The Analytical Scientist (online). I can also email a copy if you'd like to read it. [email protected]

    @Barry_FritschMilling I'd love to get my hands on that! Let's connect! [email protected]

  • There is a big difference between granola and 1.7mm size of particles. Any thoughts how this is influencing extraction in terms of time and compounds being dissolved?

  • Smaller particle size is a shorter more efficient extraction.

  • Is to fine a grind bad - total newbie - I have super dry material wants to turn to dust
    Thanks for any help ! This is only the first of many silly questions I will be asking .

  • I don't have a picture but I would tend to concur with the smaller is better option, operating on a limited budget has left me with a Ninja Grinder but is does a pretty solid job considering. On occasion I will grinding through once and let the material air dry a little more over night before grinding again. It isn't a huge particle size difference but its noticeable.

  • My biggest concern about too fine a grind is filter clogging and penetration @preacher. If it doesn't clog you should be fine.

  • From what i have heard, a fine grind helps with keeping constant flow throughout the extraction chamber. As for a "too fine of grind" i have heard powder such as keif will create channels in the chamber and the flow path, which means that some of the biomass will not be extracted. This also has to do with the flowrate of the CO2, if i am not mistaken

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