Standard Svensk standard · SS-ISO 6588-2:2022

Papper, kartong och massa - Bestämning av pH i vattenextrakt - Del 2: Varm extraktion (ISO 6588-2:2021, IDT)

Status: Gällande

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Standard Svensk standard · SS-ISO 6588-2:2022

Papper, kartong och massa - Bestämning av pH i vattenextrakt - Del 2: Varm extraktion (ISO 6588-2:2021, IDT)
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Omfattning
This document specifies a method for the determination of the pH-value defined by the electrolytes extractable by hot water from a sample of paper, board or pulp.


This document is applicable to all kinds 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 can sometimes be different (e.g. fully bleached pulp) from the pH-value measured under mill process conditions in which various types of process waters, such as chemically treated river water containing electrolytes, are used. In such cases, ISO 29681 can 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 gives more realistic results related to mill conditions than those obtained with this document. For cellulosic papers used for electrical purposes, the method used can be that given in IEC 60554-2[5].

Ämnesområden

Massa (85.040) Papper och papp (85.060)


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Standard Svensk standard · SS-ISO 6588-2:2022

Papper, kartong och massa - Bestämning av pH i vattenextrakt - Del 2: Varm extraktion (ISO 6588-2:2021, IDT)
Prenumerera på standarden - Läs mer Dölj
Pris: 636 SEK
standard ikon pdf

PDF

Pris: 636 SEK
standard ikon

Papper

Pris: 1 017,60 SEK
standard ikon pdf + standard ikon

PDF + papper

Fler alternativ Färre alternativ

Produktinformation

Språk: Engelska

Framtagen av: Kemiska analysmetoder, SIS/TK 157/AG 04

Internationell titel: Paper, board and pulps - Determination of pH of aqueous extracts - Part 2: Hot extraction (ISO 6588-2:2021, IDT)

Artikelnummer: STD-80033822

Utgåva: 3

Fastställd: 2022-02-17

Antal sidor: 16

Ersätter: SS-ISO 6588-2:2020