ISO 5636-4:2013
Paper and board -- Determination of air permeance (medium range) -- Part 4: Sheffield method
Product Details
It is applicable to papers and boards which have air permeances between 0,02 µm/(Pa·s) and 25 µm/(Pa·s) when tested with the Sheffield apparatus.
It is unsuitable for rough-surfaced materials, which cannot be securely clamped to avoid leakage.