Standard

NS-EN 725-1:1997

Sept 1997 Withdrawn

Note: This standard has a new edition: NS-EN 725-1:2007

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Abstract

This Part of EN 725 specifies methods for the determination of elements of sudium,potassium, iron, silicon, calcium and magnesium present as impurities in alumina using atomic absorption (AAS) or inductively coupled plasma (ICP) instruments. For each element present as impurities, the methods are applicable to the following ranges, calculated as oxides: Sodium oxide 20 ppm to 6000 ppm Potassium oxide 20 ppm to 100 ppm Ferric oxide 20 ppm to 300 ppm Silica 50 ppm to 2000 ppm Calcium oxide 20 ppm to 700 ppm Magnesium oxide 5 ppm to 1000 ppm

Document information

Standard from SN
Published: 8 September 1997
Withdrawn: 10 January 2008
Edition: 1
Version: 1
Document type: NAT
ISBN:

ICS 81.060.10
ICS 81.060.99
National Committee CEN/TC 184/WG 2

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Replaced by: NS-EN 725-1:2007

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NS-EN 725-1:1997
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NS-EN 725-1:2007

NS-EN 725-1:1997

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NS-EN 725-1:2007

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Abstract

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Version history Related corrigendum and amendments (0)

Version history History (2)

NS-EN 725-1:2007

NS-EN 725-1:1997

Abstract

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