why fatty acid free albumin for blocking PVDF membranes in weste

Dima Klenchin klenchin at REMOVE_TO_REPLY.facstaff.wisc.edu
Mon Mar 1 10:54:49 EST 1999

In article <7b1ds5$l62$1 at mserv2.dl.ac.uk>, wolfgang.schechinger at med.uni-tuebingen.de wrote:
>Hi all, 
>Is there any evidence if FA free albumine is important for blocking?
>In other words, what albumin quality is necessary for effective 
>blocking PVDF in westerns?

"Normal", non FA-free, works just fine. 3% for 1 hr. 

>I noticed that different albumin (BSA) qualities have highly 
>different prices.
>Is there any special grade or supllier you would recommend or 
>discourage to use?

We routinely buy from SIgma (the one that is 99% pure and cheapest
(sorry, too lazy to get the catalog) and it works for westerns and as a 
carrier in our bio-assays. 


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