Tagasi

ISO 6588-2:2020

Paper, board and pulps -- Determination of pH of aqueous extracts -- Part 2: Hot extraction

Üldinfo
Kehtiv alates 04.03.2020
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
04.03.2020
Põhitekst
29.10.2012
Põhitekst
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 will sometimes be different (e.g. 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 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 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 can be that given in IEC 60554-2[4].
*
*
*
PDF
64,06 € koos KM-ga
Paber
64,06 € koos KM-ga
Standardi monitooring
Teised on ostnud veel
Põhitekst

EVS-EN ISO 1628-1:2009

Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 1: General principles
Uusim versioon Kehtiv alates 03.04.2009
Muudatus

EVS-EN ISO 1628-1:2009/A1:2012

Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 1: General principles - Amendment 1 (ISO 1628-1:2009/Amd 1:2012)
Uusim versioon Kehtiv alates 05.09.2012
Põhitekst

EVS-EN 14791:2017

Stationary source emissions - Determination of mass concentration of sulphur oxides - Standard reference method
Uusim versioon Kehtiv alates 03.02.2017
Põhitekst

EVS-EN 16087-1:2020

Soil improvers and growing media - Determination of the aerobic biological activity - Part 1: Oxygen uptake rate (OUR)
Uusim versioon Kehtiv alates 03.02.2020