Sciencemadness Discussion Board » Fundamentals » Chemistry in General » Boatload of labglass but what is it? Select A Forum Fundamentals   » Chemistry in General   » Organic Chemistry   » Reagents and Apparatus Acquisition   » Beginnings   » Responsible Practices   » Miscellaneous   » The Wiki Special topics   » Technochemistry   » Energetic Materials   » Biochemistry   » Radiochemistry   » Computational Models and Techniques   » Prepublication Non-chemistry   » Forum Matters   » Legal and Societal Issues

Author: Subject: Boatload of labglass but what is it?
givemeliberty
Harmless

Posts: 9
Registered: 4-7-2008
Member Is Offline

Mood: No Mood

Boatload of labglass but what is it?

This may not be the right section to post it in but it is 5:30 in the morning and I have about three braincells still kicking.
I bought a van load of lab glass, took out what I wanted to keep and I'm unloading the rest on Ebay and any place else I can. The problem is I have a few pieces that I don't have a clue about. I took a picture of some of it and I hope I can attach it. If anybody wants to see what I have on Ebay, the seller ID is bach8351.
I'm trying to organize all this stuff and get a list together so if anyone wants to look at the list, pm me, I think.

The legitimate powers
of government extend to such acts
only as are injurious to others.
But it does me no injury
for my neighbor to say
there are twenty gods, or no God.
It neither picks my pocket
nor breaks my leg.
Thomas Jefferson
starman
National Hazard

Posts: 318
Registered: 5-7-2008
Location: Western Australia
Member Is Offline

Mood: No Mood

Mostly chromatography related
Duke
Harmless

Posts: 11
Registered: 26-2-2008
Member Is Offline

Mood: No Mood

Chromatography columns on the bottom, the cone shaped ones on top look like seperatory funnels with the valve missing. I've never seen the spherical shaped ones though.
matei
Hazard to Others

Posts: 205
Registered: 16-9-2006
Member Is Offline

Mood: No Mood

The spherical ones may be solvent reservoirs used for flash chromatography (they are attached at the top of the column). The columns in the picture are used for medium pressure liquid chromatography (e.g. for Pharmacia preparative chromatographs). The two teflon plungers on the right are used for gel-like stationary phases (for affinity chromatography or maybe ion exchange chromatography), which tend to swell in solvents, so the volume of the column has to be adjusted accordingly.
bfesser
Resident Wikipedian

Posts: 2114
Registered: 29-1-2008
Member Is Offline

Mood: No Mood

The pear shaped ones are probably also solvent reservoirs for the columns.
givemeliberty
Harmless

Posts: 9
Registered: 4-7-2008
Member Is Offline

Mood: No Mood

Well, I came to the right place for answers, didn't I? Do they have enough value to even bother putting them on Ebay? You have no idea how many hours I've spent trying to find out what they were. I'm a computer tech, not a lab tech.
I have some odd looking flasks, too, if you don't mind too much.
The large flask has an orifice broken off but I have at least one other one to get rid of.
And guys, thank you.

The legitimate powers
of government extend to such acts
only as are injurious to others.
But it does me no injury
for my neighbor to say
there are twenty gods, or no God.
It neither picks my pocket
nor breaks my leg.
Thomas Jefferson
Panache
International Hazard

Posts: 1287
Registered: 18-10-2007
Member Is Offline

Mood: Instead of being my deliverance, she had a resemblance to a Kat named Frankenstein

the red connections on the columns are a system created to allow qvf glass to be more easily connected /cf the standard flange/insert system usually used. I am almost positive however that it would not allow for the normal 3atm of pressure qvf gear is specced for. QVF glass, of course, is designed for production chemistry or pilot plant, a 5l round bottom costing around $1500, a 80L around$16,000. Pharma companies can afford this though.
Many chromatography people will use QVF lengths as it allows considerable pressure, the wall thickness on the glass being huge /cf normal lab glass.

Blind Angel
International Hazard

Posts: 845
Registered: 24-11-2002
Location: Québec
Member Is Offline

Mood: Meh!

On the second picture I see refrigerant and what could look like cold finger. They probably have some value, I won't pronounce on the value though. Worth putting on ebay though.

/}/_//|//) /-\\/|//¬/=/_
My PGP Key Fingerprint: D4EA A609 55E4 7ADD 8529 359D D6E2 33F6 4C76 78ED
octave
Harmless

Posts: 39
Registered: 4-11-2007
Member Is Offline

Mood: Working.

In the second picture There looks to be the bottom part of a Kuderna Danish concentrator system, which I still have no clue how it works or uses for it.
givemeliberty
Harmless

Posts: 9
Registered: 4-7-2008
Member Is Offline

Mood: No Mood

 Quote: Originally posted by octave In the second picture There looks to be the bottom part of a Kuderna Danish concentrator system, which I still have no clue how it works or uses for it.

I Googled it, read a few pages and I still don't know what it is or what it does.

The legitimate powers
of government extend to such acts
only as are injurious to others.
But it does me no injury
for my neighbor to say
there are twenty gods, or no God.
It neither picks my pocket
nor breaks my leg.
Thomas Jefferson
bfesser
Resident Wikipedian

Posts: 2114
Registered: 29-1-2008
Member Is Offline

Mood: No Mood

Check your email. I've sent you a short description.