This only speaks to precision. Doesn’t say anything about accuracy or LOD/LOQ.
You should extend your run time on peak simple temperature settings. It looks like you have another peak starting at the end of your run.
They’ve changed up their program for their gc. Also have 3rd party on it
I hear you but as a guy that’s been signing NDAs for software companies for the last 25 years, I’ve never seen an NDA that is so strict it wouldn’t allow a photo of a chromatogram. It’s far from being intellectual property.
Again, you could totally have 98% coa. And if so fuck yea. Proof is in the pudding
There are real scientists out there writing all of these methods, I’ve yet to see anything completely original. It’s literally a race to see who reverse engineers their work first.
Btw: I want to thank @Roguelab publicly again. This man will go to lengths to help. I’ve learned so much from him and am so grateful.
Here’s what one of my customers did after purchasing an SOP from me:
Lanes 3,4,5: D8, D9, D8 Processes
Lane 1: CBD Standard
Lane 2: D9 Standard
Left: Phosphomolybdate stain
Right: Anisaldehyde stain
Can you find out what he (she?) uses as a carrier solvent?
You mean the TLC mobile phase? No need to find out, they use the TLC method bought along with the isomerization processes.
That’ll be tree fiddy good sir.
But I didn’t get nuttin’!
Fer tree fiddy I want answers!
Pay up
Do you take two-party out of state checks?
Cash money player.
Now pay up.
Pimpin ain’t easy and Roiplek don’t help for free.
I don’t want no trouble…
Can I get a receipt?
Axin bout receipts an checks. Yous sound like a narc. I see you tryina hide hind that cute ass cat. Games up.
@TheFeds come get cher boi
UH OH! Jigs up…better change cats.
Check out my post history, it’s free and very helpful
“The best results were obtained with eluent F, hexane–diethyl
ether (80:20, v/v) (Table I), which allowed a clean separation of ∆8-
THC, ∆9-THC, CBN, and CBD (Figure 1)”
This eluent did not yield satisfactory results for me. D8 and D9 are too close with manual vs. automated TLC spotting, so unless you have a Linomat or ATS, you’ll need some luck telling the two spots apart.
I wasn’t satisfied with 8:2, too. If you reduce the amount of DEE, you get a quite good separation between CBD, d8 and d9.
Tried a lot of eluents (except any kind of chloroform) and Hexane:DEE worked the best for me so far. I often had problems with tailing or much worse separation.
Talking about scalability, do you think it’s more of a time/temp part of the process, weight and volume of solvent and acid, or a combination of those factors? I’ve worked with both of the solvent and acid, just never together.
With heptane and ptsa I’ve been able to scale that rather large (same with ethanol and phosphoric).
I’ve always loved chemistry and have a pretty good grasp on it (was actually going for my chemical engineering degree before my car accident a quarter of a century ago (geez, I’m showing my age )) but, trying to wrap my head around this scalability issue.
Guess it’s time to dive in and try out all the hypothesis that I mentioned.
Thanks for your contribution to the community and in advance to any advice (or not) ahead of time