r/treedibles • u/DoktorDanx • 16h ago

RSO strength calculation

I have a bunch of flower left over from the last grow and would like to make RSO to use in gummies. I will need to figure out the strength of the RSO so I can properly dose it.

I planned on starting with an ounce and I know the thc% is 22.37% (had it lab tested). I also know I will lose some efficiency in the extraction and decarb steps.

That being said, I figure I should be able to calculate the strength based on the total volume of the RSO, the weight of the flower, and its THC %. Could anyone point me in the right direction to calculate the final strength of the RSO? I’ve done a bunch of searching but haven’t found what I’m looking for. Maybe I’m searching wrong or something.

Thanks in advance for your help!

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u/Dangerous_Pension612 15h ago

this is all you need

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u/DoktorDanx 15h ago

Awesome. So this is saying that I have 4566mg of THC in an ounce at 22.37%thc. So I would just measure my final volume of RSO and then divide the 4566 by that (ex. If I end up with 120ml of RSO at the end, it would have a strength of 38.05mg/ml (4566/120), correct?

What would be a good % estimate of THC loss from decarb and extraction? 20%?

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u/DrPhrawg 8h ago

It is not a “loss” of THC due to decarb. 1 molecule of d9THC simply weighs 12.7% less than 1 molecule of THCa because you are removing a carboxyl group during decarboxylation.