T/CGA 49-2025 Active Group standards

T/CGA 49-2025 The determination of the content of gold in a gold alloy using hydrogenquinone potentiometric titration method

Publish Date: 2025-06-30 Implement Date: 2025-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CGA 49-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Precious metal mine

ICS Name: Non-ferrous metals comprehensive

Publish Date: 2025-06-30

Implement Date: 2025-08-01

Scope

Scope: This document describes the method for determining the gold content (mass fraction) in gold alloys. This document is applicable to the determination of gold content in gold alloys. Determination range (w): 30.00% to 99.50%; Main technical content: 1. Scope 2. Normative references 3. Terms and definitions 4. Principle 5. Reagents or materials 6. Instruments and equipment 7. Samples 8. Test steps 8.1 Test samples 8.2 Number of determinations 8.3 Blank test 8.4 Determination 9. Calculation and expression of results 10. Precision 10.1 Repeatability 10.2 Reproducibility 11. Test report