Tuesday, June 21, 2016

The weirdest thing you will see today



1. I'm not dead.
2. I don't know whether to laugh or to cry about this advanced flask scraper from ChemGlass. 
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18 comments:

  1. uncle samJune 21, 2016 at 10:37 AM

    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.

    ReplyDelete
  2. JohnJune 21, 2016 at 11:42 AM

    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.

    ReplyDelete
    Replies
    1. Old BiddyJune 21, 2016 at 12:52 PM

      it's a good way for chemglass to sell more RBF's

      Delete
    2. AnonymousJune 21, 2016 at 3:04 PM

      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.

      Delete
  3. Harry ElstonJune 21, 2016 at 11:54 AM

    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.

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  4. qvxbJune 21, 2016 at 12:11 PM

    ChemGlass should use "Around and Around" as this product's theme song.

    https://www.youtube.com/watch?v=ct2n2iiiIGQ

    ReplyDelete
  5. milkshakeJune 21, 2016 at 12:25 PM

    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

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  6. OldnukeJune 21, 2016 at 1:47 PM

    Somehow I just can't see a student in Prof Dr Klapötke's lab using one of these... At least, more than once. :=)

    ReplyDelete
  7. AnonymousJune 21, 2016 at 3:24 PM

    Do they also offer a hammer one can use to smash the flask and scrape off the product from the shards at one's leisure?

    ReplyDelete
  8. SSGJune 21, 2016 at 5:40 PM

    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.

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    Replies
    1. milkshakeJune 21, 2016 at 7:24 PM

      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

      Delete
  9. JonJune 21, 2016 at 6:42 PM

    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.

    ReplyDelete
  10. victoryJune 21, 2016 at 7:40 PM

    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.

    ReplyDelete
  11. KTJune 22, 2016 at 8:11 AM

    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%.

    ReplyDelete
  12. AnonymousJune 22, 2016 at 3:28 PM

    @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

    ReplyDelete
  13. CafeChemistJune 23, 2016 at 4:05 PM

    This just does not seem to be inherently safe. Many drills produce sparks at the motor bushings, not a good combination with solvent vapors.

    ReplyDelete
    Replies
    1. AnonymousJune 23, 2016 at 4:48 PM

      A coworker had an old overhead stirrer go up in flames from solvent vapors

      Delete
  14. AnonymousOctober 17, 2016 at 3:11 PM

    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..

    ReplyDelete

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

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