Transferring Pyrophoric Liquids Eps 2

[@crabcrab2024]

The first serious mistake was to not flush the black syringe. Second serious mistake when removing the black syringe! He should have tilted the latter and create an argon/nitrogen blanket over the liquid in the syringe. Third mistake was... is to use this video as a guideline.

[@hotcayle]

for got to mention it needs to be cooled down (reason for the condenser) final temp should be around 70 degrees C

[@ketur34680]

Do you have a reference for the needle adapter on your rubber tube ?

[@helencoulshed6849]

you have not evacuated the syringe before use. the syringe and needle should be oven dried before use.

[@movax20h]

I agree. The syringe should be plunged into the space above the liquid, then vacuum pulled, then filled again with nitrogen (and overpressure needle or bubbler), then syringe pullled to be filled with some nitrogen, vacuum pulled again, and syringe pushed. If needed repeat few times. After this is done, go back to nitrogen, and put the needle into the liquid and take a proper amount, then pull some extra nitrogen into needle. If needed, use a syringe with a flexible long needle, so the syringe can be oriented up or down, depending on a liquid. I am sure there are some other tricks possible, like a syringe with a needle and an extra needle valve lock, to prevent any air entering back into syringe after removing the needle from the vessal. It can probably also reduce risk of spilling.

[@hotcayle]

I am trying to setup a lab for yeast propagation, for use in making beer. I need to heat a fluid (wort) to 170 degrees then transfer the fluid into a Erlenmeyer flask. Ideally I could send the liquid though a heat exchanger of some sort and have it empty into the flask. Can this be done with a condenser and a vacuum somehow?

[@hkkhgffh3613]

Gosh, the grad cylinder was full of air!

[@tanvivaradkar7198]

Nice

[@hawkinsc478]

In my lab, girls are not allowed to wear ear-rings when operating reactions. haha~

[@raymondgrace2908]

She's cute

[@WilliamFord972]

And shouldn't be wearing those earrings

[@timgallagher858]

William Ford why not? Not in the way.....

[@hawkinsc478]

@@timgallagher858 Sometimes they are dangerous. Also, the gloves should be longger and the cuffs be tightened to protect their wrists. I my self once dropped HCl solvent on my wrist. Although it is tedious when working, but as this video is for educating the greenhands about lab safety, it should be more strict.

[@uhRoid]

cringe