GB/T 15072.2-2025 in English
VALIDMethod for chemical analysis of precious metal alloys—Part 2: Determination of silver content
- Issued on:2025-08-29
- Implemented on:2026-03-01
- File Format:PDF
- Delivery:Via email within 5 business days
$306.00
《GB/T 15072.2-2025贵金属合金化学分析方法 第2部分：银含量的测定》由TC243（全国有色金属标准化技术委员会）归口，TC243SC5（全国有色金属标准化技术委员会贵金属分会）执行，主管部门为中国有色金属工业协会。
Scope
This document describes the determination of silver content in precious metal alloys by sodium chloride potentiometric titration, potassium iodide potentiometric titration, and fire assay gravimetric method. The sodium chloride potentiometric titration and fire assay gravimetric method in this document are applicable to the determination of silver content in precious metal alloys that do not contain gold, platinum, palladium, rhodium, iridium, ruthenium, or osmium. The determination range (mass fraction) of the sodium chloride potentiometric titration method is: 3.00% to 99.50%; the determination range (mass fraction) of the fire assay gravimetric method is: 2.00% to 99.50%; the potassium iodide potentiometric titration method is applicable to the determination of silver content in precious metal alloys, and the determination range (mass fraction) is: 3.00% to 99.50%.
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