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Author: Subject: Who needs a centrifuge ?
Magpie
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[*] posted on 19-11-2004 at 19:54


Is the double wall to insulate the coolant from heat loss to the ambient atmosphere? I would think that wouldn't be significant enough to worry about. Although there is such a thing as an air condenser - and that uses convective/conductive air as coolant.

[Edited on 20-11-2004 by Magpie]




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MadHatter
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[*] posted on 20-11-2004 at 06:39
Double-walled


The double-wall causes more heat to be dumped into the coolant before exiting the
jacket. Some high-efficiency condensers double or even triple the coils in layers to
achieve this effect. The following link shows such an arrangement and as you
can see from the prices(scroll down), a bit too expensive for the home chemist.

http://www.wilmad-labglass.com/group/648




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[*] posted on 12-12-2004 at 02:35
Time


I'm still waiting for that vacuum distillation apparatus to arrive. Unfortunately, the seller shipped
it by Parcel Post. Anyway, I'll post the pictures when the snail-mail service finally delivers it.




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[*] posted on 17-12-2004 at 06:57
Condenser


The latest condenser for my collection. Here's the description: A vacuum high efficiency
condenser.

VDHEC.jpg - 62kB




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MadHatter
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[*] posted on 17-5-2005 at 03:49
Vintage flasks


Through an eBay auction, I just won a lot of (10) round bottom boiling flasks. I love winning
lab glass in lots - especially at the low price I got. Anyway, these are supposed to be
50's vintage flasks. I'm only interested in the largest 4 flasks(2 each 1000 ml and 500 ml).

These flasks are Pyrex. I will be getting (4) 300 ml, (1) 200 ml, (1) 100 ml for a total of 6
flasks. The 1st member who yells gets them - NO CHARGE AND I'LL PAY TO SHIP !
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12AX7
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[*] posted on 17-5-2005 at 04:47


YELLING FOR WHAT I DON'T KNOW! :P

*Catches breath*, so, what'd I win? *reads* ooo, labware. Would be much appreciated :)

Tim

[Edited on 17-5-2005 by 12AX7]
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MadHatter
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[*] posted on 17-5-2005 at 16:20
Labware


It's yours ! I'll U2U a message to you when I receive them.



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