Microfiltration and AntiFoam

[K N and P J Harris]

Hello,
The standard "organic" (although it was used for years before anyone 
invented either kind of PC) is caprylic alcohol. Likely to be more bug 
friendly than anything with fluorine in it. (Warning, the smell of 
caprylic alcohol is great for the first ten minutes, then it seems to 
permeate every pore in your body.
Good luck.
Peter Harris,
Reading, UK.