HEPA filters

[BLHamrick@aol.com]

I am looking for a list of manufacturers of HEPA filters for use in a 
biomedical research laboratory environment.  Please respond to me privately, 
if you have the names and numbers of manufacturers, or if you know where a 
list of such manufacturers is readily available.  I am looking specifically 
for manufacturers, and not for distributors.

Barbara L. Hamrick
BLHamrick@aol.com
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