MW of PVP inDenhardts?

Greg Galloway galloway at
Mon Jun 17 12:09:36 EST 1996

I am trying to determine what is the correct molecular weight of 
Polyvinylpyrrolidone used in Denhardts solution.  Does it really matter?  We 
have at least 3 different sizes on the shelf.  I've looked in Maniatis, the 
MGH "Red book" and a couple of other places and they all just call for PVP, 
but do not give a size preference.  Any suggestions?
Mark Watson

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