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AS 3515.3:2019
$87.70
Gold and gold bearing alloys, Part 3: Determination of gold content (greater than 99.5 %) — Gravimetric (fire assay) method
This Standard sets out a gravimetric procedure for the determination of gold content in gold alloys. This method is applicable to gold and gold alloys containing more than 99.5 % gold and < 0.05 % rhodium and < 0.05 % tungsten.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Reagents
6 Apparatus
7 Sample inspection
8 Procedure
8.1 Number of determinations
8.2 Proof test
8.3 Determination
8.3.1 Preparation of the test portion and proof
8.3.2 Cupellation
8.3.3 Parting
9 Calculations
9.1 Change in mass of proof
9.2 Determination of surcharge
9.3 Adjusted mass of the gold cornet
9.4 Gold content
10 Precision
11 Acceptance of results
12 Test report
Appendix A
A.1 Scope
A.2 Criteria for selection of a method
A.3 Vacuum tube sampling
A.3.1 Principle
A.3.2 Procedure
A.4 Dip sampling
A.4.1 Principle
A.4.2 Sampling apparatus
A.4.3 Procedure
A.5 Sampling by clipping
A.6 Granule sample
Bibliography
Cited references in this standard
Please select a variation to view its description.
| Published | 01/03/2019 |
|---|---|
| Pages | 12 |
Please select a variation to view its pdf.
