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ISO 535:2023
Paper and board - Determination of water absorptiveness - Cobb method
This document specifies a method for determining the water absorptiveness of paper and board, including corrugated fibreboard, under standard conditions.
This document is not applicable for paper of grammage less than 50 g/m2 or embossed paper. It is not applicable for porous papers such as newsprint or papers such as blotting paper or other papers having a relatively high-water absorptiveness for which ISO 8787 is more suitable.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]