reusing plasmid maxiprep columns

[Wolfgang Schechinger]

hi all, 

I noticed that plasmid maxi columns e.g. nucleobond 
(clontech/macherey-nagel) or those from quiagen may be re- used 
several times. 
currently, I use them only for the same plasmid (from XL-1 blue) and 
wash them with plenty of water after eluting the plasmid. has anyone 
tested how long the columns will leak plasmid, e.g. by repeating the 
prep without bacterial lysates and checking for plasmids in the elute 
by transforming aliquots ef the elute into bacteria? In other words, 
does anyone dare to use the columns for different preps? what 
lifetime of the columns may be expected? 
I (and probably many others out here) would appreciated any data or 
even references on that!

Cheers and happy easter (if applicable)

Wolfgang

-----
This message is RNAse free - please don't touch!
-----                              
Wolfgang Schechinger         
University of Tuebingen
email: wgschech at med.uni-tuebingen.de
http://www.medizin.uni-tuebingen.de/~wgschech/start.htm
-------
!Junk mail is *not* appreciated!
SPAMs will be answered automatically by sending my 128MByte virtual memory file.
This is *NO* joke.
------
usual disclaimers apply
------