Except for the part where I need to document it in metrc, and would prefer to be able to point at a process the AHJ would approve should some bean counter decide to question the hundreds of “micro-extraction for in-house QC” they’ve never encountered before.
Not a necessity, just a preference…
Would a “micro extraction SOP” work if you’re using the same solvent volumes and weight of source material for the batches being tested? Just deduct the sample weights from batch ID and add to metrc?
I’m sure people have squirted more volumes of Gas in a booth before. Get a 2 x 12 spool and pretend it’s your mol sieve
Aren’t you allowed to take a gram out of every batch as a “QC sample”?
getting an extract sample large enough to send out for third party testing will likely take 10g, but yeah there should be no problem with taking samples so long as they are documented as such and actually extracted.
assuming they are appropriately documented, and anyone wishes to follow up, I’d like an extraction SOP that doesn’t read as open blasting in the booth.
Just do it fam
Whats the difference between a wet pour for diamonds and an open blast
the bosses comfort level… 
he’s done none of this before, and there was a local “lab” that made a mess of things just a couple of months ago.
it is the back up plan…
Could go from 1 inch spool to a diamond miner
Pretty sure many companies use acetone, not because it is most representative of ethanol extractions, but because it reduces fastest on the hot plates.
5 hot plates, extract 5 samples in 5 containers with 100-200 gram of biomass (adjust for what you need to yield) and extract with 800-1000 ml of acetone. Muddle, mix a few times in 10 minutes, decant, reduce down on the hot plates. Sulfur contamination becomes fairly evident in the last few minutes.
Pull into syringes when adequately reduced. Label appropriately, ideally pulling two samples, one to test, one to retain.
I guarantee many labs are doing this, judging by their hazardous waste piles.
which sounds pretty similar to
except for “burp” rather than “leak slowly”, and I’ve setup miners to “burp” into recovery tanks in the past.
“pouring” into 40ml VOC vials via 18gauge needle would be a nice touch.