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EN 725-1:2007

Current
Current

The latest, up-to-date edition.

Advanced technical ceramics - Methods of test for ceramic powders - Part 1: Determination of impurities in alumina
Published date

09-12-2007

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
   4.1 General
   4.2 Reagents for fusion
   4.3 Sulphuric acid-phosphoric acid mixture for acid
       dissolution
   4.4 Reagents for calibration
5 Apparatus
6 Test sample
7 Decomposition of the test sample
   7.1 General
   7.2 Fusion
   7.3 Acid dissolution
8 Calibration graph
   8.1 General
   8.2 Fusion
   8.3 Acid dissolution
   8.4 Drawing the calibration curve
9 Adjustment of the apparatus
   9.1 Atomic absorption spectrometer
   9.2 Inductively coupled plasma spectrometer
10 Measurements
11 Expression of the results
12 Test report
Annex A (informative) Repeatability and reproducibility
Bibliography

This Part of EN 725 specifies one fusion and one acid dissolution method for the determination of elements of sodium, potassium, iron, silicon, calcium and magnesium present as impurities in alumina using atomic absorption spectroscopy (AAS) or inductively coupled plasma (ICP) spectroscopy. 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

Committee
CEN/TC 184
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

Standards Relationship
NF EN 725-1 : 2007 Identical
NBN EN 725-1 : 2007 Identical
NEN EN 725-1 : 2007 Identical
NS EN 725-1 : 2ED 2007 Identical
I.S. EN 725-1:2007 Identical
PN EN 725-1 : 2008 Identical
SN EN 725-1:2007 Identical
UNI EN 725-1 : 2008 Identical
UNE-EN 725-1:2007 Identical
BS EN 725-1:2007 Identical
DIN EN 725-1:2008-06 Identical

ISO 6474-1:2010 Implants for surgery Ceramic materials Part 1: Ceramic materials based on high purity alumina
DD ENV 14232:2003 Advanced technical ceramics. Terms, definitions and abbreviations
05/30117313 DC : DRAFT MAY 2005 EN 13233 - ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS
CEN/TR 13233 : 2007 COR 2007 ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS
UNI EN 14232 : 2009 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
16/30332223 DC : 0 BS ISO 6474-1 - IMPLANTS FOR SURGERY - CERAMIC MATERIALS - PART 1: CERAMIC MATERIALS BASED ON HIGH PURITY ALUMINA
09/30185903 DC : 0 BS EN 14232 - ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
PREN 14232 : DRAFT 2009 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
I.S. ENV 14232:2003 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
EN 14232:2009 Advanced technical ceramics - Terms, definitions and abbreviations
PD CEN/TR 13233:2007 Advanced technical ceramics. Notations and symbols
BS EN 14232:2009 Advanced technical ceramics. Terms, definitions and abbreviations
DD CEN/TR 13233 : 2007 ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS
BS ISO 6474-1:2010 Implants for surgery. Ceramic materials Ceramic materials based on high purity alumina
I.S. EN 14232:2009 ADVANCED TECHNICAL CERAMICS - TERMS, DEFINITIONS AND ABBREVIATIONS
S.R. CEN TR 13233:2007 ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS

ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
EN ISO 3696:1995 Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

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