SRI 8610V Gas Chromatograph On Line

Lu lu lu lu lu lu lu lu lu lu lu lu!!!!!!!!!!!!!!!  As fate would have it, our new used Perkins Elmer 8500 never operated reliably, so Graywolf purchased an SRI 8610V Gas Chromatograph and ancillary equipment from an analytical lab that closed in southern Oregon and leased it to us for $1.  He also leased the spare capacity out to Specialized Formulations to analyze their own products, as well as to analyze for hire.

The former owner was kind enough to tutor in its use, as part of the deal, and we’ve done analysis with it already, but are still playing with carrier gasses and will need to recalibrate when we are done.  We have the standards for the three major cannabinoids, and six of the major terpenes, which we will start with initally, and add more terpenes as we go, at $160 per terpene standard.GC results-1-1GW

Hee, hee, hee, let the fun begin!

14 responses to this post.

  1. Posted by dave on September 26, 2015 at 9:03 PM

    is there a portable gas chromatography unit that can do this? how about the FROG-4000?


  2. Posted by Mike-420 on October 27, 2013 at 6:12 AM

    Hey can we get that MS/GC of the RECLAIM i asked for like 2 months ago you said you were gonna post the results ???


    • I don’t remember making that promise, so perhaps you can further elaborate? In my dotage, my memory was the second thing to go and I don’t remember what the first was.

      We have a GC, not a GC/MS, and after our scheduled maintenance and recalibration this weekend, we can run a reclaim sample. Are we looking for anything in particular, or just the general profile?


  3. Posted by Nima Kia on March 31, 2013 at 10:26 AM

    You guys are really leading the industry. Keep it up! I have a quick question, which of the six terpene standards did you choose to go with first? Do you purchase standards through Restek or have you found somewhere better?


  4. Posted by truedef on March 16, 2013 at 10:40 AM

    Have you guys done anything with this, I would like to see some results using Vector butane as the solvent.


  5. Just a tip to get you started – rather than waiting for analytical grade reference standards, you can use essential oils to find the retention times you are looking for. To do this, look for essential oils that come with a CoA so that you can get a rough approximation of what to expect. I think you’ll find many of them to be quite pure, and at a fraction of the cost of the standards. eg, Orange Oil is often better than 80% d-limonene. Keep up the good work!


  6. Posted by jason on February 20, 2013 at 3:54 AM

    How do I reach someone to discuss GC residual solvent testing? is this going yet?


  7. Posted by Ken on February 9, 2013 at 8:50 PM

    What a great information tool!


  8. Posted by Dr teeth on February 7, 2013 at 9:41 PM

    I don’t know much about how mmj testing labs test various components of marijuana, but am I to assume that this device is what they used to test all the different THCs, CBD and CBN?

    If so, how does it work?


    • Yes, as well as the terpenes, residual solvents, and pesticides. 40ml of alcohol is mixed with .05grams of oil, which we inject into the machine. It heats the material and puts it through a column packed with an absorbent, that allows the different constituets in the injected material to exit the other end of the column at different rates. When the different constituets pass out the end, a flame ionizing detector records their presence and relative volume, by ploting the results on a line graph.

      Prior to injecting the sample, standards for all of the constituets we are looking to identify were indected into the machine and their peaks identified to the software. The software then knows how to label the same peaks when the samples are run.


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