Sciencemadness Discussion Board
Not logged in [Login - Register]
Go To Bottom

Printable Version  
 Pages:  1  ..  5    7
Author: Subject: Mystery Glassware Identification Thread
j_sum1
International Hazard
*****




Posts: 3094
Registered: 4-10-2014
Location: Oz
Member Is Offline

Mood: inert even with vigorous stirring.

[*] 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?
View user's profile View All Posts By User
Deathunter88
Hazard to Others
***




Posts: 242
Registered: 20-2-2015
Location: Beijing, China
Member Is Offline


[*] 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.
View user's profile View All Posts By User
j_sum1
International Hazard
*****




Posts: 3094
Registered: 4-10-2014
Location: Oz
Member Is Offline

Mood: inert even with vigorous stirring.

[*] 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.
View user's profile View All Posts By User
Brom
Hazard to Self
**




Posts: 83
Registered: 19-7-2015
Member Is Offline


[*] 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?

20170309_124000.jpg - 2.2MB
View user's profile View All Posts By User
diggafromdover
Hazard to Self
**




Posts: 83
Registered: 24-2-2015
Location: New Hampshire
Member Is Offline

Mood: Inconherent

[*] 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.



Enjoying second childhood with REAL chemistry set.
View user's profile View All Posts By User
Brom
Hazard to Self
**




Posts: 83
Registered: 19-7-2015
Member Is Offline


[*] 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.
View user's profile View All Posts By User
A Halogenated Substance
Hazard to Self
**




Posts: 69
Registered: 7-2-2017
Location: United States
Member Is Online

Mood: Oxidizing due to extended exposure to oxygen

[*] 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?

image.jpg - 1.7MB
View user's profile Visit user's homepage View All Posts By User
byko3y
International Hazard
*****




Posts: 657
Registered: 16-3-2015
Member Is Offline


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


Looks like a burette blank to me.
View user's profile View All Posts By User
SgtAltek
Harmless
*




Posts: 4
Registered: 20-1-2017
Member Is Offline


[*] 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.

unnamed.jpg - 20kB
View user's profile View All Posts By User
gdflp
Super Moderator
*******




Posts: 1278
Registered: 14-2-2014
Location: NY, USA
Member Is Online

Mood: Free to Experiment

[*] 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]




View user's profile View All Posts By User
100PercentChemistry
Hazard to Others
***




Posts: 112
Registered: 21-8-2015
Location: On the island of stability
Member Is Offline


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


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


IMG_3870.PNG - 5.3MB
View user's profile View All Posts By User
Panache
International Hazard
*****




Posts: 1027
Registered: 18-10-2007
Member Is Offline

Mood: not letting the robots defeat me

[*] 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




So Swiss Miss, she spends her waking hours absolutely focused on being near me, until anything living (other than a human or a plant) enters the picture, at that point she becomes absolutely focused on killing that living thing be it a fly, a kangaroo, a cow, a mouse, it's so otherworldly, she has no sense of herself during these phases, destroying her physical body without pause, or even acknowledgement and she's so quiet about it, very disturbing initially, when you first fully understand this about her.
View user's profile View All Posts By User
Panache
International Hazard
*****




Posts: 1027
Registered: 18-10-2007
Member Is Offline

Mood: not letting the robots defeat me

[*] 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!



So Swiss Miss, she spends her waking hours absolutely focused on being near me, until anything living (other than a human or a plant) enters the picture, at that point she becomes absolutely focused on killing that living thing be it a fly, a kangaroo, a cow, a mouse, it's so otherworldly, she has no sense of herself during these phases, destroying her physical body without pause, or even acknowledgement and she's so quiet about it, very disturbing initially, when you first fully understand this about her.
View user's profile View All Posts By User
j_sum1
International Hazard
*****




Posts: 3094
Registered: 4-10-2014
Location: Oz
Member Is Offline

Mood: inert even with vigorous stirring.

[*] posted on 31-5-2017 at 18:57


For sale on eBay:
http://www.ebay.com/itm/Glass-Column-4-tube-Connections-350m...
s-l500.jpg - 14kB

Any ideas?
View user's profile View All Posts By User
RogueRose
International Hazard
*****




Posts: 555
Registered: 16-6-2014
Member Is Offline


[*] posted on 1-6-2017 at 09:50
Milipore filter


I found this unit for sale and I'm not exactly sure how it works and want to verify it before I buy. The bottom piece that has the 40/35 joint and vacuum port is the receiver - correct? What size paper would this use and can the filter paper/material be custom cut to be placed in there and can a piece of cloth be used if large particles are only needed to be removed?

I found this for $10 + shipping which seems good - is there anything I should know about these before buying? anyone know what diameter paper this would use?





filter.jpg - 309kB
View user's profile View All Posts By User
Mabus
Hazard to Others
***




Posts: 177
Registered: 3-11-2013
Member Is Offline

Mood: Energetic

[*] posted on 2-6-2017 at 02:55


I work with a similar device.
The ground glass joint is connected to a thick Erlenmeyer flask with an external ground glass joint, while the lateral glass tube is for the vacuum hose. Like this.
As for the filter paper used, I cannot say until I know the dimensions of the plastic ring which contains the fritted glass, the the unit I work with accepts filter paper of Ø 45-50 mm. If you know the dimensions of the fritted glass and plastic ring, you can know what filter paper you can use, but if your filter paper is too big, you can cut it to size, just make sure the filter paper surface is at minimum slightly bigger than the fritted glass, because if it's smaller, it will not cover the space between the fritted glass and the plastic ring and the liquid will leak through that crack.
I haven't tried cloth, but given how thin the paper needs to be to prevent leaking, I would not recommend it.




View user's profile View All Posts By User
Harristotle
Hazard to Self
**




Posts: 86
Registered: 30-10-2011
Location: Tinkerville
Member Is Offline

Mood: I tink therefore I am

[*] posted on 2-6-2017 at 04:51


I used one of these many years ago.
We used to put a 0.22um filter on the frit, seat the whole thing on top of a Buchner funnel, and connect it to water vac via another 0.22um filter. Then we would filter sterilise our Eagles media + 10% fetal calf serum. We would use this for growing liver cells.

Now I think that they mostly are sold pre-mixed.

I still can feel the pieces of a pasteur pipette that is in my index finger, from when I tried to pull the glass pasteur pipette that we attached to that same pump and used as an aspirator! Young and stupid once!

View user's profile View All Posts By User
RogueRose
International Hazard
*****




Posts: 555
Registered: 16-6-2014
Member Is Offline


[*] posted on 3-6-2017 at 01:50


Thanks for the replies! That helps determine if it will be useful.
View user's profile View All Posts By User
NedsHead
National Hazard
****




Posts: 338
Registered: 9-12-2014
Location: South Australia
Member Is Offline


[*] posted on 10-7-2017 at 02:54


This one popped up on Gumtree Aus https://www.gumtree.com.au/s-ad/torrensville/miscellaneous-g...

looks to be mounted upside down as an ornament, any idea what it is?
View user's profile View All Posts By User
Sulaiman
International Hazard
*****




Posts: 1333
Registered: 8-2-2015
Location: Walsall, England
Member Is Offline


[*] posted on 10-7-2017 at 03:58


It looks like a three-phase mercury arc rectifier https://en.wikipedia.org/wiki/Mercury-arc_valve



Still confused by Chemistry, Life, the Universe and everything.
All my media containing the SM logo are © Science Madness
View user's profile View All Posts By User
NedsHead
National Hazard
****




Posts: 338
Registered: 9-12-2014
Location: South Australia
Member Is Offline


[*] posted on 10-7-2017 at 06:45


Thanks Sulaiman that has to be it, I was wondering what the electrodes fitted in the arms were about, I've never heard of these old rectifiers, very interesting
View user's profile View All Posts By User
 Pages:  1  ..  5    7

  Go To Top