source for simple chromatography columns

[Wolfgang Schechinger]

Hi all, 

Could anyone please point me to a cheap source for plasic (poly 
ethylene or similar) columns suitable for 1 to 5 ml of 
charged agarose?

Al input is welcome!

Wolfgang
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Dr. Wolfgang Schechinger, Dept. of Pathobiochemistry
University of Tuebingen, Germany
email: wolfgang.schechinger at med.uni-tuebingen.de 
wwWait: http://www.medizin.uni-tuebingen.de/~wgschech/start.htm
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usual disclaimers apply 
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