Dude... that video was really scary to watch. I mean, I knew the flask wouldn't break since they made the video and are trying to sell the product. But still.
I guess now I can get those extra 100mg of product out when I'm too lazy to dissolve it and transfer it to a smaller flask for evaporation.
It would seem to me that the scratches created by this thing inside the RBF would become larger and larger over time, increasing the amount of residual clinging to it, creating a further need for more rotary scratching...
For some really valuable products, I guess the shortened life of the RBF would be worth it.
Maybe the scratches will help facilitate future crystallization in the first place? I for one would worry about ease of cleaning and possible metal particle issues with repeated usage even if willing to try in the first place.
I think I would categorize flinging a strip of chain mail in a borosilicate glass flask as "Not a recommended practice." I can envision this being used on an energetic compound to "get that last bit out" and investigating the deflagration/detonation afterwards. No thanks.
some inventions are best left buried: A manager might see it as a great efficiency tool and try to impose innovations... But there was a stirrer of similar type, with a thin wire coil instead of a paddle, it was used for high speed stirring of molten sodium or potassium metal with mireal oil or molten wax, if you needed a freshly made fine dispersion in oil/wax
It's a nice problem to try to solve. If I didn't believe it would scratch the crap out of my lovely flasks, and if my lab had an actual drill instead of just a homeless selection of drill bits in our toolbox, I might think this was cool. Especially if they made ones for conical flasks/Erlenmeyers for those last few stubborn xtals after recrystallization.
A brush from teflon spaghetti would work, you don't need high speed, just hand-swirling that brush inside a clamped down flask should do. If you get a tiny bit of Teflon into your silica+product for column, no problem
When I got their email the other day, I went from not knowing such a thing existed to totally wanting one in about thirty seconds. Now, there's no way I can just buying the thing, but I still want it. If only it worked on smaller flasks, say down to 100 mL.
A sonicator might do an equally good job if your compound is dry enough. Agree to the scrapping glassware threat this thing can result. Good luck selling them.
You can thank every lunatic slave-driver PI in organic synthesis (this subdiscipline seems to attract those types like a damn magnet) who insists on some asinine yield like a 99.99%.
@CJ and Forum: Well, this was apparently designed by "one of us"...kudos to Chemglass for entertaining innovation from its customers? https://www.linkedin.com/pulse/chem-spin-new-lab-tool-synthetic-chemists-thomas-caferro
I have used these tools, and now I will never go back to my old bent spatulas for scraping. They work great on dry stuff when you can't use solvent to transfer. They save me a lot of time and pain. I suppose these are like any power tools - there is a right way and a wrong way to use them. A riding lawnmower can save you a lot of time and effort, but not if you drive it into a pond. These Chem-Spin scrapers work very well if the user has basic competence with tools. If not, stick with your bent spatulas..
looks like Blogger doesn't work with anonymous comments from Chrome browsers at the moment - works in Microsoft Edge, or from Chrome with a Blogger account - sorry! CJ 3/21/20
Dude... that video was really scary to watch. I mean, I knew the flask wouldn't break since they made the video and are trying to sell the product. But still.
ReplyDeleteI guess now I can get those extra 100mg of product out when I'm too lazy to dissolve it and transfer it to a smaller flask for evaporation.
It would seem to me that the scratches created by this thing inside the RBF would become larger and larger over time, increasing the amount of residual clinging to it, creating a further need for more rotary scratching...
ReplyDeleteFor some really valuable products, I guess the shortened life of the RBF would be worth it.
it's a good way for chemglass to sell more RBF's
DeleteMaybe the scratches will help facilitate future crystallization in the first place? I for one would worry about ease of cleaning and possible metal particle issues with repeated usage even if willing to try in the first place.
DeleteI think I would categorize flinging a strip of chain mail in a borosilicate glass flask as "Not a recommended practice." I can envision this being used on an energetic compound to "get that last bit out" and investigating the deflagration/detonation afterwards. No thanks.
ReplyDeleteChemGlass should use "Around and Around" as this product's theme song.
ReplyDeletehttps://www.youtube.com/watch?v=ct2n2iiiIGQ
some inventions are best left buried: A manager might see it as a great efficiency tool and try to impose innovations... But there was a stirrer of similar type, with a thin wire coil instead of a paddle, it was used for high speed stirring of molten sodium or potassium metal with mireal oil or molten wax, if you needed a freshly made fine dispersion in oil/wax
ReplyDeleteSomehow I just can't see a student in Prof Dr Klapötke's lab using one of these... At least, more than once. :=)
ReplyDeleteDo they also offer a hammer one can use to smash the flask and scrape off the product from the shards at one's leisure?
ReplyDeleteIt's a nice problem to try to solve. If I didn't believe it would scratch the crap out of my lovely flasks, and if my lab had an actual drill instead of just a homeless selection of drill bits in our toolbox, I might think this was cool. Especially if they made ones for conical flasks/Erlenmeyers for those last few stubborn xtals after recrystallization.
ReplyDeleteA brush from teflon spaghetti would work, you don't need high speed, just hand-swirling that brush inside a clamped down flask should do. If you get a tiny bit of Teflon into your silica+product for column, no problem
DeleteWhen I got their email the other day, I went from not knowing such a thing existed to totally wanting one in about thirty seconds. Now, there's no way I can just buying the thing, but I still want it. If only it worked on smaller flasks, say down to 100 mL.
ReplyDeleteA sonicator might do an equally good job if your compound is dry enough. Agree to the scrapping glassware threat this thing can result. Good luck selling them.
ReplyDeleteYou can thank every lunatic slave-driver PI in organic synthesis (this subdiscipline seems to attract those types like a damn magnet) who insists on some asinine yield like a 99.99%.
ReplyDelete@CJ and Forum:
ReplyDeleteWell, this was apparently designed by "one of us"...kudos to Chemglass for entertaining innovation from its customers?
https://www.linkedin.com/pulse/chem-spin-new-lab-tool-synthetic-chemists-thomas-caferro
This just does not seem to be inherently safe. Many drills produce sparks at the motor bushings, not a good combination with solvent vapors.
ReplyDeleteA coworker had an old overhead stirrer go up in flames from solvent vapors
DeleteI have used these tools, and now I will never go back to my old bent spatulas for scraping. They work great on dry stuff when you can't use solvent to transfer. They save me a lot of time and pain. I suppose these are like any power tools - there is a right way and a wrong way to use them. A riding lawnmower can save you a lot of time and effort, but not if you drive it into a pond. These Chem-Spin scrapers work very well if the user has basic competence with tools. If not, stick with your bent spatulas..
ReplyDelete