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Author: Subject: What are these glassware pieces good for?
a_bab
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[*] posted on 19-8-2008 at 23:24
What are these glassware pieces good for?


I'm wondering what this glassware is used for, and what is it called (the numbered items)

I know it's for organic syntheses, and it's fairly old glassware (very dusty).

Does it worth getting it?

[Edited on 20-8-2008 by a_bab]

[Edited on 20-8-2008 by a_bab]

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Sauron
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[*] posted on 19-8-2008 at 23:59


An initial guess would be parts of some sort of liquid/liquid extraction system.

Hard to say because hard to see well. Photoshop may help.




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pbmineral
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[*] posted on 20-8-2008 at 00:10


Hello,
The 1st one seems to look like a Dean Stark (not the common form)
This piece of glassware is used directly after a vigreux column. You have to place above a condenser

When you'll distill a mixture and get 2 phases the distilate will slowly full teh tube and you'll observ 2 layers.

This tool could keep upper layer and take the other back in the distillation flask.


Th second on may be a mercury contactor (I see a red plug) but not sure
It may work with pressure or liquid level and one part may be filled with mercury, ...

The last one perhaps used as a mercury barometer ???
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-jeffB
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[*] posted on 20-8-2008 at 12:37


That coil on 3 almost looks like a closed-loop convective circulator -- the coolant heats up in the Allihn jacket, goes up the tube through the center of the coil, cools off in the coil, then sinks back down to the jacket. I have no idea if this is ever done, or if it would even work, but that's what it looks like.

I'd definitely snatch the stuff up if the price is right (along with the joint size).
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al93535
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[*] posted on 12-10-2008 at 15:36
what is it


Does anyone know what this glassware is and its use? I really appreciate it, thanks...

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Panache
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[*] posted on 12-10-2008 at 16:57


No 1 is definitely the main body to a continuous liquid liquid extraction device, with a condenser being fitted on the topmost socket and a round bottom on the lower socket, you also require a itting or the center of the body. Vogel 3rd edition describes it use quite well on pg 152.



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bfesser
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[*] posted on 12-10-2008 at 21:04


Quote:
Originally posted by al93535
Does anyone know what this glassware is and its use? I really appreciate it, thanks...


Gas sampling/collecting tube.

ex: http://kimble-kontes.com/html/pg-30040.html
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ordenblitz
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[*] posted on 13-10-2008 at 16:08


I thought it looked like a part from a vacuum manifold.. maybe a trap to catch anything pulled into the line? It certainly has the fittings for connection to a manifold.
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Panache
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[*] posted on 13-10-2008 at 20:06


Quote:
Originally posted by bfesser
Quote:
Originally posted by al93535
Does anyone know what this glassware is and its use? I really appreciate it, thanks...


Gas sampling/collecting tube.

ex: http://kimble-kontes.com/html/pg-30040.html


Yeah i thought that, but don't gas sampling tubes/vessels have a third socket, perpendicular to the two taps, to fit a septum to withdraw the collected gas from, funny as i see on the link you posted its not the case but rather annoying to use, you must disconnect the entire thing to sample the gas away.

[Edited on 13-10-2008 by Panache]




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bfesser
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[*] posted on 13-10-2008 at 20:07


Some do, some don't.
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watson.fawkes
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[*] posted on 14-10-2008 at 08:58


If gas is a reagent, then a two-tap device can be used to measure out an aliquot by measuring the feed pressure and knowing the total volume. One implication is that this is most relevant to a vacuum system.
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