GB/T 15072.2-2025 Active National standards

GB/T 15072.2-2025 Method for chemical analysis of precious metal alloys—Part 2:Determination of silver content

GB/T 15072.2-2025 Method for chemical analysis of precious metal alloys—Part 2:Determination of silver content

Publish Date: 2025-08-29 Implement Date: 2026-03-01 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: GB/T 15072.2-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for precious metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 20 pages

Scope

This document describes the methods for determining the silver content in precious metal alloys by potentiometric titration with sodium chloride, potentiometric titration with potassium iodide, and fire assay weight method.
In this document, the potentiometric titration with sodium chloride and the fire assay weight method are suitable for determining the silver content in precious metal alloys that do not contain gold, platinum, palladium, rhodium, iridium, ruthenium, or osmium. The measurement range (mass fraction) of the potentiometric titration with sodium chloride is 3.00% to 99.50%; the measurement range (mass fraction) of the fire assay weight method is 2.00% to 99.50%; and the potentiometric titration with potassium iodide is suitable for determining the silver content in precious metal alloys, with a measurement range (mass fraction) of 3.00% to 99.50%.

Development Information

Word Count: 25 Thousand words Pages: 20 pages

Same series standard

GB/T 15072.1-2025 Methods for chemical analysis of precious metal alloys—Part 1:Determination of gold content GB/T 15072.3-2025 Methods for chemical analysis of precious metal alloys—Part 3:Determination of platinum content GB/T 15072.4-2025 Methods for chemical analysis of precious metal alloys—Part 4:Determination of palladium content GB/T 15072.6-2025 Methods for chemical analysis of precious metal alloys—Part 6:Determination of iridium content GB/T 15072.20-2025 Methods for chemical analysis of precious metal alloys—Part 20:Determination of rhodium content

Replace the following standards

GB/T 15072.2-2008 Test method of precious metal alloys—Determination of silver contents for silver alloys—Potentionmeter titration with sodium chloride GB/T 15072.5-2008 Test method of precious metal alloys—Determination of silver content for gold and palladium alloys—Potentionmeter titration with potassium iodide

Referenced Standards

GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values

Related Standards

GB/T 13840-1992 Abolished

GB/T 13840-1992 Wafer carriers

Publish Date: 1992-12-28

GB/T 15677-1995 Replaced

GB/T 15677-1995 Lanthanum metal

Publish Date: 1995-08-11

GB/T 3136-1995 abolished_transferred

GB/T 3136-1995 Tantalum powders

Publish Date: 1995-10-17

GB/T 3463-1995 Abolished

GB/T 3463-1995 Tantalum wires

Publish Date: 1995-10-17

GB/T 3628-1995 Replaced

GB/T 3628-1995 Tantalum and tantalum alloy foils

Publish Date: 1995-10-17

GB/T 16476-1996 Replaced

GB/T 16476-1996 Scandium metal

Publish Date: 1996-07-09