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  • BSI
    BS ISO 6588-1:2020 Paper, board and pulps. Determination of pH of aqueous extracts - Cold extraction
    Edition: 2020
    $316.70
    / user per year

Description of BS ISO 6588-1:2020 2020

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 60554-2[ 4].



Standard NumberBS ISO 6588-1:2020
TitlePaper, board and pulps. Determination of pH of aqueous extracts - Cold extraction
StatusWithdrawn
Publication Date2020-03-06
Withdrawn Date2022-03-25
ReplacesBS ISO 6588-1:2012
Replaced ByBS ISO 6588-1:2021
Identical National Standard OfISO 6588-1
DescriptorsChemical analysis and testing, Paper, Paper products, Specimen preparation, Aqueous extraction methods, Board (paper), pH measurement, Paper pulp
ICS85.060 Paper and board, 85.040 Pulps
CommitteePAI/11
ISBN978 0 539 04025 8
PublisherBSI
Pages16

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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