Re: quattro-digest V3 #222

[Glen Powell <gpowell@acacianet.com>]

>Hmmm.. not so sure glen, if you look at a paper one, the fanfold is tall 
>and dense, where the K&N isnt. I would say the paper one has easily twice 
>the surface area. But because the paper ones are tight, the flow isnt as 
>good as the K&N's. 
>
>Bob

You need look at 'surface area' on a 'molecular' level. A 'cube' made of of
carbon has surface area  >>> the cube (power of 3) of one side of the cube.
That's why carbon is used as a filter material -- you need to compare the
'molecular' surface area of paper with that of the guaze material used in
the K&N.



-glen