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Nitrogen Evaporator
Posted: Thu Nov 06, 2008 6:51 pm
by alvin
Hi everyone,
I am looking into purchasing a nitrogen evaporator to dry down my sample (Pentane/DCM) from 10ml to 1 ml. Does anyone have a good recommendation for a nitrogen evaporator that can dry at least 6-12 samples at a time?
Thanks.
Alvin
Posted: Thu Nov 06, 2008 7:26 pm
by sassman
Supelco's Visiprep manifold might work for you. What volume are you evaporating? As an environmental chemist, I generally frown on evaporating or even using DCM. Ethyl ether is often a suitable alternative. For liquid/liquid extractions, SPE is often a better choice.
Posted: Thu Nov 06, 2008 9:14 pm
by alvin
Well I am collecting fractions from my gel column. Each fraction is around 10 ml, which I would like to further concentrate down to 1 ml by Nitrogen dry down.
I am looking into more something like this, but I would like to see if there is more options before I make the purchase. Please check the following link.
http://www.organomation.com/in_nevap.html
Posted: Thu Nov 06, 2008 11:17 pm
by AICMM
Organomation was pretty much the standard when I was growing up. They work very well and with the water bath they will keep chill down to a minimum. On the other hand I am pretty sure Pierce (derivatizing agent maker) also makes a small counter top model with hook tubes that might work for you.
Best regards.
Posted: Fri Nov 07, 2008 12:52 am
by Schmitty
I use my N-Evaps for water to DCM, no problem at all. Just be sure to turn off the heat at the end of the day...
Posted: Fri Nov 07, 2008 10:38 am
by H.Thomas
Posted: Wed Nov 12, 2008 5:00 pm
by matthew
FWIW, you can often find Organomation units on ebay for cheap.
This is overpriced, but the pictures are helpful:
http://cgi.ebay.com/Organomation-Associ ... 240%3A1318