recreational

Test Results anyone? THC, THCA, Formula...

States that have legalized in cannabis require testing for potency and contaminants in cannabis, and lab-testing cannabis is quickly becoming an important part of the industry. The tests for pesticides, mold, contamination, etc. don’t require any new or special analytical techniques and are part of standard practice for other agricultural products as well. With the right lab equipment, chemists can measure cannabinoids to a certain degree of precision if they do it right, but the lack of a standardized way of looking at the data has everyone confused.

The subject of this issue is Δ9-tetrahydrocannabinolic acid (THCA), which occurs naturally in the plant. THCA needs to be heated so it changes into THC, the active form that gets you high. All cannabinoids occur naturally in their acid forms, that’s just how their enzymes make them. The difference between THCA and THC is a carboxy group. Upon smoking, cooking or vaping heat gets rid of the carboxy so THCA gives of CO2, loosing about 12% of its weight in the process. Why does this matter for lab testing? Because THCA is heavier than THC, and lab results are given in percent mass.

The root of the confusion is the fact that different lab techniques give inherently different potency values. Depending on the lab, the analysis machine might use one of two separation methods: gas chromatography (GC) or liquid chromatography (LC).

GC happens at high temperatures, enough to completely decarboxylate all the cannabinoids in the mixture. The oven it happens in decarboxylates THCA before passing on to the detector, so it only picks up THC. This makes GC almost useless for testing edibles, because you need to be able to tell the difference between orally inactive THCA and active THC. Furthermore, decarboxylation happens incompletely at those high temperatures in the injector port, conserving no more than 70% of THCA, according to one study.

Liquid chromatography happens at room temperature and does not decarboxylate any cannabinoids, giving separate values for THCA and THC, which are always both present. These results need to be interpreted correctly, and hold hidden information about how the sample was handled and temperatures it has been exposed to.

Let’s look at an example. Given one lab result you could get three THC potency readings depending on how you read it, but only one method really stands to reason. Consider a made up lab result of Hypothetical OG that used LC, say it has 22.32% percent mass of THCA and 2.41% percent mass THC (active THC).

If you just look at the THCA value, you might think it has 22.32% THC. If you add the THC value to that, you might think this strain has 24.74% THC. Neither of these values is correct.

To get a real potency value you need to consider both THCA and THC, but with a correction factor for THCA before you add in THC. To calculate THCTOTAL:

 

THCtotal = (%THCA) x 0.877 + (%THC)

 

0.877 is the molecular mass (mm) of THC divided by that of THCA; this factor boils it down to a simple formula: take 87.7% of the value for THCA, then add on the value for THC. This formula also holds true for finding the active CBD content (CBD TOTAL) because CBD and THC have the exact same mm. Therefore the correct value of THC TOTAL for Hypothetical OG is 21.98%, the weighted average of THCA and THC.

To get a real measure of the potency of a strain of pot, you need to look at THC TOTAL. This is because the relative amounts of THCA and THC depend on the amount of heat the flower, dry bud or extract has been exposed to. Since this is always different, lab testing needs to see past this variable.

Since GC doesn’t work for edibles, many labs are switching to LC to test for edibles. If you know you’re looking at a lab test that used LC, you’ll need to use this formula to get a consistent value of THC TOTAL.

When looking at lab results, make sure to take this into consideration. Be suspicious of lab results that just give you one number for %THC. If the lab used GC, you won’t have this issue at all. The %THC given from a GC machine roughly reflects THC TOTAL.

Read the original article from High Times HERE.

420 Canna-Celebration!

We will be hosting an intro to Cannabis 101 from 5:00p -7:00p with an open Q&A.
1.25 Cent Joints while supplies last starting at 4:20!

Deals, Specials, Giveaways and GG swag all day!
*Munchies will be available!!*
Extended hours 9:00 am-9:00 pm.
More details to come!

Gaia Medbar gets DOPE

On Feb 1, 2016 Dope Magazine published an article about Gaia Medbars, a delicious chocolate bar which we happen to carry. If you haven't tried one, come down quick to get a taste!

"Edible enthusiasts unite in celebration as talented culinary artisans and visionaries shake the shackles of cannabis prohibition and create progressive new dishes using THC infused ingredients. Accomplished chefs Megan Endres and Zack Derck have teamed up with DOPE Magazine to repurpose and give new life to the handcrafted cannabinoid-laden chocolate Gaia Medbar."

Read the full article HERE.

Application is in!

Today was the first official day that the Oregon cannabis industry was able to start applying for licenses, and ours is in! #LEGALIZEDIT #HIGHINTHEHOOD

Trust your Bud- Gorge Greenery is Pesticide Free!

While this article was released in June earlier this year, it's come to our attention that many medical patients and recreational users alike are unaware of the serious risk of pesticides in Cannabis flower and products. Here at Gorge Greenery, we carry Clean Green Certified gardens and send everything out to OG Analytical (one of the trusted labs used in this study), for the most comprehensive pesticide screening capabilities in Oregon to ensure clean product every time.

"Dab Society Dutch Treat, a potent cannabis extract sold to medical marijuana patients, sailed through state-mandated pesticide testing. The results were printed on the label, backed by an official report. Workers at a Southeast Portland dispensary were happy to share the lab certificate. All you had to do was ask.

But, in fact, two laboratories commissioned by The Oregonian/OregonLive found pesticides in the same sample of Dutch Treat at levels above what the state allows.

It wasn’t an isolated case.

A combination of lax state rules, inconsistent lab practices and inaccurate test results has allowed pesticide-laced products to enter the medical marijuana market, The Oregonian/OregonLive has found.

Marijuana that fails a pesticide screen is not supposed to be sold to patients. But two other cannabis products in addition to Dutch Treat also tested above acceptable levels for pesticides.

The Oregonian/OregonLive shopped at Oregon dispensaries, bought cannabis that had passed pesticide tests and sent the samples to independent labs for further screening. Two labs performed the analysis: OG Analytical, a marijuana testing lab in Eugene, and Pacific Agricultural Laboratory, a Portland lab that specializes in detecting pesticides on foods and agricultural commodities. Both confirmed in blind testing the presence of pesticides that should have triggered red flags from previous labs."

Read the full article from The Oregonian/OregonLive HERE.

Gorilla Glue #4 is in the house!

We just released the 2014 LA Cannabis Cup winning hybrid strain: Gorilla Glue #4 a small batch grown organically with Nectar of the Gods, harvested and hand-trimmed with intimate care by Big Beard Farms! This winner is one every connoisseur, or as we say, "cannaisseur" needs to try! 

Sustainability-Driven Entrepreneurs

Right now “sustainability” still means pushing back against business as usual. As a young sustainability professional, I wanted to further explore the characteristics of successful sustainability-driven entrepreneurs.

1. Sustainable DNA

They make sure sustainability is baked into their business model. Over 1,300 companies have met B-Lab’s requirements and are officially recognized as a Certified B Corporation. According to B-Lab, “By voluntarily meeting higher standards of transparency, accountability, and performance, Certified B Corps are distinguishing themselves in a cluttered marketplace by offering a positive vision of a better way to do business.” There are also 1,200 companies have partnered with 1% for the Planet to donate one percent of their net annual sales to non-profit organizations working to tackle environmental challenges. Whether sustainability-driven entrepreneurs get official certifications and partner with big networks or just participate in similar practices without official recognitions, they always make sure they are having a positive impact on the economy, environment, and community.

2. Compassionate

Earlier this year, The Washington Post reported on a German study that found, “heightened sensitivity to the suffering of other people” is a major “emotional and personality-based driver of environmental attitudes.” Since systematically improving the way we treat communities is a major part of sustainability, it makes sense that the people who choose to work in the field also tend to be mindful of how they personally treat the individuals around them, which makes for great coworkers.

3. Highly Motivated

Sustainable entrepreneurship isn’t something people usually get into unless they are truly passionate about the issues. They believe in their vision for how much better the world could be and have an insatiable need to keep working towards it, even with the knowledge that they may not live to see it come to fruition. Because as anyone in the business of improving the world knows—it is an ongoing process, not a destination.

4. Resilient

Working towards sustainability is inherently emotional work, and because it requires going against the status quo it is filled with roadblocks and naysayers. Successful sustainability-driven entrepreneurs must have strong emotional awareness and they develop strategies to help them keep moving forward when the world tries to burn them out. In an interview with Net Impact Adam Hammes, sustainability professional and author, cited high emotional intelligence as the most important skill successful sustainability professionals possess. He said, “Without the soft skills of dealing with interpersonal struggles, the hard skills will never be put to use. You will get overwhelmed and burn out. Once you have developed emotional intelligence and soft skills, it is also helpful to then know your strategy – to save time and energy – and know your audience – to frame your approach in ways that make it well-received.“

5. Holistic Approach

Successful sustainability-driven entrepreneurs know the importance of approaching their work systematically. They make sure their actions truly match their philosophy and that they are making the intended impact on their surroundings. For example, a if a sustainability-driven restaurant owner uses compostable food packaging, then they make sure there is an appropriate and user-friendly disposal system in place.

*Source:  http://www.purelabels.com/

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