"Darcy's" Harborlite Perlite
Harborlite gives "Darcy's" as the unit for porosity of their perlite. I am sure that this is in reference to Darcy's law. But does anyone know if/how Darcy's can be translated to microns?
La Cumbre Brewing Co.
I Googled and got this:
refers back to this:
I hope this is accurate, because sometimes wikipedia isn't as perfect as you'd think...