Whatman Filter Paper

[Aaron Polesky]

This may seem like a silly question, but I'm trying to find Whatman 
filter paper discs, grade no. 17, and none of my catalogues list them.  
Can anyone recommend somewhere to obtain them, or a reasonable 
substitute?  Any grade below 17 won't do the job.  Thanks in advance,

-- 
 Aaron Polesky			Dept. of Zoology
 University of Toronto		e-mail: apolesky at credit.erin.utoronto.ca
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