ISO 5636-2:1984

Paper and board — Determination of air permeance (medium range) — Part 2: Schopper method

Specfies detailed requirements and operating procedures applicable to specific types of apparatus, and is applicable to papers and boards having air permeances between 1 x 10- and 1 x 10 m/(Pa.s), being unsuitable for rough-surface papers such as creped and corrugared papers, which cannot be securely clamped to avoid leakage.