[Diy_efi] way off topic - waterproof technology

[WSCowell at aol.com]

In a message dated 24/01/2007 09:00:49 GMT Standard Time,  
espresso_doppio at yahoo.com writes:

"Air" is  a large collection of various compounds, and
many of them are larger than  an H20 molecule; further,
if H2O wouldn't come through at all, it wouldn't  be
breathable.



Awww come on guys, this just IS NOT TRUE.
 
Air is 80% Nitrogen, about 19% Oxygen, and the rest is mostly rare gases  
like Argon, Neon, Krypton, etc with a trace of CO2.  There are no  "compounds" in 
air except 0.03% CO2 of course.
 
Contaminated air with petroleum byproducts in suspension/aerosol etc may  
well contain "compounds" but, in percentage terms, in vanishingly small  amounts. 
 The above figures still basically prevail.
 
Gore-Tex is permeable to gaseous compounds and elements.  It is  designed to 
be RESISTANT to the passage of water DROPLETS (not vapour).
 
It may not do the job asked in the original post, but let's just remember  
Chemistry 101....
 
Will