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Ethyl oleate is more a carrier oil than a solvent. It does have solvent properties. But you mainly use it to thin out your carrier oil. For e.g. instead of using 100% grapeseed oil, you could use 50/50 gso/eo.

Its not unheard of to use 100% eo for brews. Or at least once upon a time it wasn't. People say its toxic. Others love it. Ive never used it.
This.

I say this every time I see EO brought up. Its a carrier oil with a higher ability to hold a solute than other oils while being much more viscous than most oils. This creates a thinner solution that can hold higher mg/ml than a standard GSO or MCT.

It is much more benign than guaiacol and shouldn't be thought of as the same thing.

If youre allergic to EO, stay away from CN oils. If you've been using CN oils and have no issues, chances are you've been using EO and you'll be fine.
 
Going to ask Jano if he will bundle HPLC and GCMS at a discount. Would be a useful package unless he has a separate EO test for less? I didn't think he did.
I think he does. The question was asked and think he said he could test for EO and guaiacol for a small fee. I’ll see if I can find that post.
 
The idea is that pharma is perfectly, 100% sterile after terminal sterilization. Any compromise of the vial could introduce bacteria that could, over time multiply to the point of causing an infection. They don't want a vial pierced and reused months later.

Sterile filtration isn't 100% effective. As a practical matter what really protects against a vial becoming overrun with bacteria is the bacteriostatic environment created by benzyl alcohol. Just use proper aseptic technique. Sterilize the stopper, use a sterile syringe, and the amount of bacteria you'd introduce into a new sterile vial is inconsequential and not going to overcome the bacteriostatic environment, A good quality stopper fully heals, but to be extra certain, there's a sterile vial sealing sticker you can use to ensure the stopper is fully sealed.

Edit: I see you found the sticker.
Here's an anecdote purely for entertainment. I have pushed in air and pulled out oil intermittently over 9 months with the same 10 ml vial. No issues with proper technique.
 
I think he does. The question was asked and think he said he could test for EO and guaiacol for a small fee. I’ll see if I can find that post.


Yep, ethyl oleate via GCMS. Would be nice to package with HPLC for discount but he will say no, haha.

Few will pay all that to screen their cheap Chinese oils. But useful for domestic screen right now.
 
Here's an anecdote purely for entertainment. I have pushed in air and pulled out oil intermittently over 9 months with the same 10 ml vial. No issues with proper technique.

The biggest threat with long term storage safety in this scenario may be a pierced stopper that doesn't heal properly allowing the BA to evaporate off and any residual bacteria becoming active. But we're talking a very long time, and the vial seal should eliminate that already low probability. .
 

Yep, ethyl oleate via GCMS. Would be nice to package with HPLC for discount but he will say no, haha.

Few will pay all that to screen their cheap Chinese oils. But useful for domestic screen right now.
Hmm. You found a different post than the one I was thinking of.
 
Do you really push in air? I know it helps with drawing the oil out but if the bottle is going to be used that long.
Depends on where you live and how clean you keep it. If you live in West Bengal or Bed-Stuy maybe don't. If you live in a well kept cabin outside Casper WY you're probably fine.

If you're worried about it, get a bottle of BA, shake it up, and draw the vapor off the top.

Or, get @readalot to start campaigning vendors to include a can of sterile air with every purchase to prove their cleanrooms are up to par. :p
 
Do these guys ship to the UK and if so are they shipped from china or EU based warehouse.

Any UK based users here with experience with delivery would be great for your feedback
 

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