Can you post a working link?
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Stick around. Keep reading. Those privileges will come.
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Don’t @ me. Im just the monkey that reposted the link.
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Thanks. Did a couple of edits upthread & in tricks of the trade to make things easier…
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Perfect! Thank you for posting that.
Sorry for all the hassle with the links and images. Thanks for being patient though. ky_cbd was kind enough to give me a promotion so I should be able to post links/images if anyone needs anything I haven’t yet included.
I ended up purchasing one of the $35 GL45 to 24/29 adaptors I tried to link to earlier (here, which I also just found on AliExpress in PTFE, PBT and PP) just because I’m curious if they’re going to be better than my DIY work-around. I’ll be sure to post an update once I test it out.
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Just a quick update - I got the GL45 adaptor for ground glass in (from LaborXing), and I gotta say, I’m surprised at the quality.
I haven’t actually put anything through it yet, but I can tell you it fits very well. Air tight. I can even use a keck clip on it.
In summary - Not bad at all for $35
Edit: The other one I got from AliExpress also just came in, and its basically the same thing. Good quality.
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I’m impressed with these things.
It seems like such a common sense gadget to have around the lab, I was pretty surprised how difficult it was to find a cheap option. Really appreciate you @jhyland87 for making an account and posting this great tip!
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For sure! They’re one of those things that you didn’t know how much you needed until you finally got one, lol.
I think having a sep funnel going directly into it wouldn’t work well though (as seen in your photo). You. need a way to release the pressure.
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I was just testing how well the adapter fits a 24/40 joint, I’m going to use them for buchner filtration. I think I will eventually try your other solution with the stainless steel 24/40 adapter sold by BVV to try to use the wider mouth media bottles directly in the rotovape (when I’m feeling brave cuz I know it’s not advised to pull vacuum on those bottles)
I think I will eventually try your other solution with the stainless steel 24/40 adapter sold by BVV to try to use the wider mouth media bottles directly in the rotovape
Wider mouth than the GL45 bottles? What style bottle would you use it on? Just curious.
when I’m feeling brave cuz I know it’s not advised to pull vacuum on those bottles
I think pulling a vacuum on larger glass containers is usually fine if you’re just using it for a rotovap. Its when you get up to high vacuum and very high temperature that you need to worry about the glass deforming and breaking.
If you watch any of NurdRages videos you’ll see he does his vacuum distillations all in 1L erlenmeyer flasks and never seems to run into issues (that he’s reported). And I’ve done quite a few vacuum distillations in 2L erlenmeyer flasks that survived. So if you’re just going to rotovap (so mild vacuum and maybe ~100 °C), I would say you don’t have much to worry about. I’ve never ran into issues in that scenario.
Oh, for a vacuum test on these, I vacuum dried a compound I just vacuum filtered (I had my rotovap in storage, so I can’t test that at the moment), and it seemed to work very well. No leaks or anything. Video below.
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Yeah I’m not too worried about it. I just don’t have a whole lot of trust in the quality of my cheap chinese manufactured media bottles 
The wider GL80 bottles are what I envision using in the rotovap. If you’re recovering solvent from a solid compound it kind of sucks to try to dig it out of a narrow necked bottle. Looks like BVV doesn’t sell an adapter wide enough to use for this purpose though, I’ll see if I can figure out another solution
Wait, do you mean like these ones?
I tried to use them to hold my alkali metals and they leaked so badly. The caps were so thin that they warped way too much, and they (as you can see on the sodium container) they didn’t even seat well against the container rim surface, so they just leaked like crazy. I literally just gave mine away, lol.
I would recommend not using those for anything. Maybe some name brand ones would be better, but they would be significantly more expensive too.
If you’re looking for affordable name brand stuff, look at BiotechCA and BiotechCT on Ebay. The guy who runs it is named Sam, and hes pretty awesome. The stuff is super affordable and good quality. At least 70% of my glassware is from him. And hell do 20% discount if you do off-ebay sales.
Edit: I think what you’re looking for is something like this, which is unfortunately pretty expensive. That’s listed on Sam’s store, so if he has a price that high, that means you likely won’t ever find it cheaper anywhere else, lol. If you do find something that works, please lmk. I suppose you could get the SS adaptor I linked and braze it onto the top of a mason jar? That might be your best bet.
Edit 2: I suppose there’s no reason you couldn’t just use a 500mL reaction vessel like this:
and probably replace the clamp with something a little more slim like this one (except for the right size, I think you’d need 100mm, not 110mm)
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I haven’t had any of those issues with those bottles before, they are the industry standard for packaging cannabinoids. They certainly seem airtight, but I’ve never used them to hold alkali metals!
Thank you for the suggestions. I found this in my search: ADAPTER ONLY, PTFE, GL80 TO 24/40 OUTER - Ecodyst but I’m not sure if it’s in stock, the company hasn’t gotten back to me yet.
That’s a Chemglass product. It’s $207
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Yep, Chemglass, not surprised its $200. That doesn’t even include the actual recovery flask.
If your concern is that you want to have a larger neck on the spinning flask (eg: easier to get dried contents out of), I think I may have found a decent solution.
Its called a Lyph Lock Flask, used for freeze drying samples. Here’s an example one I found on E-bay for $200.
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