Any of you growing Green Crack and Maui Wowie?

HB DC said:

Maybe its not the sample... It maybe the testing method. Last I looked a GC burns up the THCa and THC and doesn't give the best, brag able, results... GC is not the best for cannabis testing since the measuring device uses heat to test product and cannabis is heat sensitive. Heat + cannabiniods = BAD

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Rck James said:

We should have a RIU Rage in The Cage event at the next market.

Let's make friendly gentleman wagers in marijuana while we all stand around smoking blunts and cracking jokes.

What ever happened to friendly stoners?

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Van Deemter said:

Considering how most people will be using the product involves heat (i.e., smoking), GC is the only method that provides accurate, reliable data as to THC concentration. Yes, the THCA is decarboxylated to THC during GC analysis- which is precisely why it is consumed by smoking. This is also why tinctures created without heat may have little or no medical benefit. Gas chromatography offers the greatest accuracy and precision with respect to quantification of primary cannabinoids, as well as the most reliable cannabinoid profile for those who consume cannabis and its products by smoking. The combination of gas chromatography with flame ionization detector (GC/FID) offers the best combination for quantifying THC, CBD, and CBN, and GC/FID is the method that we offer in our lab.

LC offers the benefit of not exposing the sample to undue heat, which preserves the 'natural' profile of cannabinoids. This allows determination of minor compounds like CBG, CBC, and THCV (among many of the tens of natural phytocannabinoids). However, to the best of my knowledge, nobody is buying or selling marijuana based on its levels of these minor compounds. Moreover, if one were to report the concentration of THC using LC, it would be a fraction of the "real" value, as there is no decarboxylation of THCA to THC. These values must be calculated (versus read directly) if liquid chromatography is used.

Both methods have their advantages and disadvantages; saying one is "good" and other is "bad" gives the science of these analyses a disservice, as does asserting that heat is intrinsically bad for cannabinoids. If it were, nobody would smoke the stuff, or use a vaporizer.

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1337hacker said:

I'm just gonna put it out there real quick.... I have offered HPLC testing a few times on a few different local boards... I have yet to receive a PM with someone interested ... leads me to believe no one in AZ actually wants the accurate numbers and would instead like to think their shit is 20 % + lol!!

In the 1000s of tests that have been run through HPLC machines, only 1 or 2 strains have ever even broken the 20 % mark.

I'll offer one more time. If you are interested in HPLC testing , (not done by Az Med testing, we all know they are a joke), I can line up the tests for about 60 Bucks each . Generally a gram sample is a good start, but we can even test early plant tissue to get early indications of CBN/THC ratios etc.

Let's see if there's interest this time, or if people are still going to keep trying to hit the 31 % mark at AZ med testing LOLZ

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