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Author: Subject: Mystery Glassware Identification Thread
j_sum1
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[*] posted on 5-3-2017 at 18:59


I don't understand how this works. Is it some kind of cold finger in a gas stream?
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Deathunter88
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[*] posted on 5-3-2017 at 22:43


Quote: Originally posted by j_sum1  
I don't understand how this works. Is it some kind of cold finger in a gas stream?


The idea is you put your compound that you want to dry in the inner class chamber. Then you hook a round bottom flask and a condenser onto the outer chamber. After that you can connect a drying tube or something to the third joint leading into the middle chamber where you placed your compound. After that is all done, you choose a solvent that has a boiling point at the temperature you want to dry at. Say you have a heat sensitive compound that decomposes above 60 degrees. Then a solvent you could use would be acetone, since it has a boiling point of 56 degrees. Since the tube with your chemical is immersed in the vapor stream, it will be kept at a constant temperature (the BP of the solvent you use). Quite ingenious actually.
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j_sum1
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[*] posted on 5-3-2017 at 22:50


Quote: Originally posted by Deathunter88  
Quote: Originally posted by j_sum1  
I don't understand how this works. Is it some kind of cold finger in a gas stream?


The idea is you put your compound that you want to dry in the inner class chamber. Then you hook a round bottom flask and a condenser onto the outer chamber. After that you can connect a drying tube or something to the third joint leading into the middle chamber where you placed your compound. After that is all done, you choose a solvent that has a boiling point at the temperature you want to dry at. Say you have a heat sensitive compound that decomposes above 60 degrees. Then a solvent you could use would be acetone, since it has a boiling point of 56 degrees. Since the tube with your chemical is immersed in the vapor stream, it will be kept at a constant temperature (the BP of the solvent you use). Quite ingenious actually.


So you need a drying tube with a female joint to make it function properly.
Or you could use a two neck flask, condenser and a thermometer well with a glass wool plug pushed half way down and some CaCl2 on top. :D

i love these ingenious ideas people have come up with and thinking how I could achieve the same or similar result.
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Brom
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[*] posted on 9-3-2017 at 10:55


I found this in a small box labeled special cell B. Any ideas what it is designed for?

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[*] posted on 9-3-2017 at 11:03


If the wire is resistance wire, then the cell could be used in a device like a ketene generator.



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Brom
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[*] posted on 9-3-2017 at 15:09


Now that i think of it, i found some leads in the same drawer that i found the item in. Ill get them next time i go by and maybe it will help to figure out what it is for sure.
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A Halogenated Substance
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[*] posted on 24-3-2017 at 10:14


I bought a piece of glassware from an antique shop that I found interesting today. I originally had thoughts of using it in part as a drying tube or some kind distillation setup piece.

The owner said that to him, it looked like a piece of equipment used to brew moonshine (though I have no such interests).

Anyone know exactly what this is and perhaps some good lab applications for it?

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byko3y
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[*] posted on 24-3-2017 at 10:34


Looks like a burette blank to me.
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[*] posted on 30-3-2017 at 08:05
Any Ideas?


Found this in my chem lab, my teacher doesn't even know what it is.

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gdflp
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[*] posted on 30-3-2017 at 08:11


That looks like a Soxhlet extractor modified so that the material to be extracted is outside of the vapor path. In a normal Soxhlet, the chamber containing the material to be extracted is heated by the vapor coming off the lower flask, something which is actually advantageous in many cases. It can be undesirable though, so I would guess that it's basically a Soxhlet extractor for temperature sensitive compounds.

[Edited on 3-30-2017 by gdflp]




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100PercentChemistry
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[*] posted on 9-4-2017 at 18:30


Anyone know what this is? The clamps feel like tungsten.


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[*] posted on 21-4-2017 at 05:48


The first two I believe Are the same device just different scales and configurations and they came from the same bulk lot.
The third one I have a bunch of different sizes etc, I'm guessing electrochemical thing?
The forth is my fav fuck knows whatitis item.

IMG_1555.JPG - 1.3MBIMG_1556.JPG - 1.2MBIMG_1557.JPG - 1.3MBimage.jpg - 1.1MB




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[*] posted on 2-5-2017 at 01:15


Fuck me 100%chemistry, I have one of those I have kept for about a decade, except the only have the glass part on the far right. No idea what it's for!



Fuck the rainbow bridge, I miss Sweetie.
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