GB/T 18996-2021
Silver jewellery alloys—Determination of silver—Volumetric(potentiometric) method using sodium chloride or potassium chloride (English Version)
- Standard No.
- GB/T 18996-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- 国家市场监督管理总局、中国国家标准化管理委员会
- Latest
- GB/T 18996-2021
- Replace
- GB/T 18996-2003
- Scope
- This document describes a method for the determination of silver content in silver alloy jewelry using the sodium chloride or potassium chloride volumetric method (potentiometric titration). This document applies to silver alloy jewelry, handicrafts and materials with a silver content of 800‰~999‰. These alloys may contain copper, zinc, cadmium and palladium, the presence of these elements will not interfere with the determination method except that palladium must be precipitated and separated before starting the titration. Note: This method is the recommended replacement method of GB/T17832.
GB/T 18996-2021 Referenced Document
- GB/T 9725 Chemiaal reagent.General rule for potentiometric titration
- ISO 11596 Jewellery and precious metals — Sampling of precious metals and precious metal alloys*， 2021-12-06 Update
GB/T 18996-2021 history
- 2021 GB/T 18996-2021 Silver jewellery alloys—Determination of silver—Volumetric(potentiometric) method using sodium chloride or potassium chloride
- 0000 GB/T 18996-2003(XG1-2003)
