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ISO 6588-1:2020

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

View Superseded by

Paper, board and pulps Determination of pH of aqueous extracts Part 1: Cold extraction

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

23-11-2021

Superseded by

ISO 6588-1:2021

Language(s)

English, French

Published date

24-02-2020

€60.00
Excluding VAT

This document specifies a method for the determination of the pH-value defined by the electrolytes extractable by cold water from a sample of paper, board or pulp.

This document is applicable to all types of paper, board and pulp.

As the quantity of extractable ionic material approaches zero, as in the case of highly purified pulps, the precision of the method becomes poor because of the difficulties encountered in making pH measurements on water containing little electrolytic material.

Since the extraction in this document is performed with distilled or deionised water, the pH-value measured will sometimes be different (e.g. for fully bleached pulp) from the pH-value measured under mill process conditions in which various types of process waters, e.g. chemically treated river water containing electrolytes, are used. In such cases, ISO 29681 should be used instead, as it is specifically applicable to bleached pulps from virgin fibres and to pulp samples having a low ionic strength for which the pH value will give more realistic results related to mill conditions than those obtained with this document.

For cellulosic papers used for electrical purposes, the method used should be that given in IEC 605542[4].

DocumentType
Standard
Pages
7
PublisherName
International Organization for Standardization
Status
Withdrawn
SupersededBy
Supersedes

Standards Relationship
UNI ISO 6588-1:2020 Identical
AS/NZS 1301.421:2020 Identical
NF ISO 6588-1:2020 Identical
NEN-ISO 6588-1:2020 Identical
BS EN ISO 7213:2021 Identical
BS ISO 6588-1:2021 Identical

AS/NZS 1301.422:2020 Method of test for pulp and paper Paper, board and pulps - Determination of pH of aqueous extracts - Hot extraction

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