[mir]

Have you tried using this method before?

http://orgchem.colorado.edu/hndbksupport/colchrom/colchromprocmicroflash.html

How large amounts of sample does it take without being overloaded?

Perhaps this would be a great idea doing before running a larger scale flash column?

You might save some time and money.

[wzfan]

Than ::)ks!

[mir]

No problem 

And I wonder if this might be an alternative to preparative TLC?

[movies]

I don't use this method, I prefer prep TLC, but many of my coworkers use this method a lot and really swear by it.

[mir]

I don't use this method, I prefer prep TLC, but many of my coworkers use this method a lot and really swear by it.

Are they using the exact same method? I think Im going to try the method, but with nitrogenpressure and maybe invent some kind of a solvent container on the top of the pipette. Any suggestions to how to do that? 

[movies]

Pretty much just like the link you posted, I think.  The solvent reservoir at the top probably isn't necessary because the flow should be pretty fast.  Just keep a beaker with your eluent nearby and you can refill as you go.  We usually take one of those interlocking plastic tubing connecters and use that to force pressure on the pipette, usually the smaller side is a perfect fit.  You'll have to hold it there while you elute, but it's pretty easy and still quick.