GSO ISO 6588-2:2014
纸、纸板和纸浆 水提取物酸值的测定 第2部分：热提取物

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

GSO ISO 6588-2:2014 发布历史

GSO ISO 6588-2:2014由GSO 发布于 2014-12-25。

GSO ISO 6588-2:2014在国际标准分类中归属于: 85.040 纸浆。

GSO ISO 6588-2:2014 纸、纸板和纸浆 水提取物酸值的测定 第2部分：热提取物的最新版本是哪一版？

最新版本是 GSO ISO 6588-2:2014 。

GSO ISO 6588-2:2014的历代版本如下：

• 2014年 GSO ISO 6588-2:2014 纸、纸板和纸浆 水提取物酸值的测定 第2部分：热提取物

This part of ISO 6588 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 part of ISO 6588 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 part of ISO 6588 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. It is necessary to be aware that the results will not be the same when measuring pH according to this part of ISO 6588 when compared to ISO 29681. The differences can be significant especially when measuring pulps having a low ionic strength. ISO 6588-1 differs from this part of ISO 6588 only as regards the extraction conditions. No general guidance can be given as to which of the two procedures (hot or cold) is best suited in a particular situation. For cellulosic papers used for electrical purposes, the method used should be that given in IEC 60554-2.

标准号

GSO ISO 6588-2:2014

发布

2014年

发布单位

GSO

当前最新

GSO ISO 6588-2:2014

 

 

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