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ISO 5267-2:2025

Pulps — Determination of drainability — Part 2: "Canadian Standard" freeness method ISO 5267-2:2025

Publication date:   Oct 1, 2025

General information

60.60   Standard published   Oct 1, 2025

ISO

ISO/TC 6 Paper, board and pulps

International Standard

85.040   Pulps

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Scope

This document specifies a method for determination of the drainability of water from a pulp suspension in terms of the “Canadian Standard” freeness method in millilitres.
In principle, this method is applicable to all kinds of pulp in aqueous suspension.
NOTE            Treatments of pulp suspensions which produce a large proportion of fines can induce an anomalous rise in freeness (false freeness), as a rule at values below 100 ml.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 5267-2:2001

NOW

PUBLISHED
ISO 5267-2:2025
60.60 Standard published
Oct 1, 2025




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