I know there is another thread somewhere on this topic, but I have been unable to find it. If a mod can find it please merge it.
The last few days I have been collecting glassware and equipment that is being given away by a former professor of mine. I have to admit, I am a
sucker for anything free and that has caused me to grab stuff I will never have a use for (ex: power supply for electron microscope, from another
source, but I digress). I grabbed some glass pieces that I have no idea what they do:
Anyone know?
[Edited on 13-5-2006 by rogue chemist]
[Edited on 13-5-2006 by rogue chemist]Mr. Wizard - 12-5-2006 at 19:20
The top one with the side arm looks like you could heat solids, maybe to oxidize them or reduce them, in the arm and then react the gas from or to the
liquid in the flask.
The other item looks as if you could use it to get a very exact boiling point by putting a thermometer right at the point where the vapor coming out
of the short 'condenser' is at equilibrium with the liquid that would collect at the space around the hole. The item doesn't look complete, as there
is no bottom connection. Maybe the part was salvaged from a broken unit?The_Davster - 12-5-2006 at 19:30
In the picture it looks as if the bottom item has no bottom, but the lower chamber is actually sealed. When the top part is inserted at the ground
glass joint the unit is entirely sealed.bio2 - 13-5-2006 at 17:50
Top piece is cold finger for the sublimator.The_Davster - 13-5-2006 at 20:44
Oh I see it now, the bottom picture is some sort of precision sublimator for sublimating a solid out of a liquid solution with a lower boiling point
than the sublimation point of what is being sublimated. The little hangy dish thing off the cold finger is weird though...
Of course water at a specific temp would have to be run through the condensor part. If I am intrepeting it correctly.
Perhaps the top picture's piece would have vapours run over a solid. I think that was what Mr. Wizard was getting at. Something like evaporate
liquid chlorine out of the lower flask, pass it over tin in the little tube, and SnCl4 vapours could be condensed by hooking a condensor up to the
14/20 joint there.The_Davster - 19-5-2006 at 16:02
Another. The lower tube is just a capilary, for reduced pressure distillation I assume. The two upper arms have ID of around 1.5mm.
Zinc - 12-7-2006 at 13:25
I have a funel with out the lower part and it is sealed at the bottom. Look at the attachment for a drawing of it. Ufortunatley I do not have a
digital camera so I can not post a picture.
S-Bursic - 16-7-2006 at 12:04
I have one exactly the same. It is quite unique, so it is possible that someone ordered from a factory to be made especially for himself. Maybe it
used to cover something, a flask or a beaker...
S-Bursic - 16-7-2006 at 12:08
I have one exactly the same. It is quite unique, so it is possible that someone ordered from a factory to be made especially for himself. Maybe it
used to cover something, a flask or a beaker...
Nicodem - 16-7-2006 at 12:15
I guess someone accidentally broke a funnel (happens all the time) and figured out that by sealing the hole he can make use of it as a collector for
sublimations.
And this one, it looks like a soxhlet, but is it non-automatic or so? picture 4
I bought the stuff with many other things.
Thanks
[bewerken aan 25-7-2006 door q_y_p]not_important - 24-7-2006 at 19:32
Are 3 & 4 jacketed? It looks a bit like a large distallation receiver I've seen, although it may be someone's research project remander.
The last one, the second #4, may be a liquid/liquid extractor, similar to a soxhlet, for extraction from a liquid denser than that being boiled. Needs
better photos of the base of the bulb, or some text detailing what it's like there.
#1 could be a large distallation receiver, an oversize Dean-Stark, or a condensation trap for someone's project.
#2 needs more detailed photos, and/or descriptive text.
[Edited on 25-7-2006 by not_important]q_y_p - 25-7-2006 at 01:47
The colours are not showing heat or cold, I downt know if it is heated or cooled.
If the pressure is very high the purple could go to the red... painting 2
[bewerken aan 25-7-2006 door q_y_p]not_important - 25-7-2006 at 04:24
Those make 1 and 4 to be "liquid-liquid extraction" devices. Either you would be extracting from water with a solvent lighter than water, or from a
solution in something heavier than water and using water as the extraction solvent
