GB/T 18996-2003 《Determination of silver in silver jewellery alloys--Volumertic(potentiometric) method using sodium chloride or potassium chloride》 Related products

GB/T 18996-2003 stipulates that the silver content of silver alloy jewelry should be determined by sodium chloride or potassium chloride volumetric method (potential Titrimetric method). It is suitable for all kinds of silver alloy jewelry. By dissolving the sample, silver ions are reacted with sodium chloride or potassium chloride to generate settling, and the reaction endpoint is determined by monitoring the potential change with a Potentiometric titrator, so as to calculate the silver content. The standard specifies the required instruments, such as Potentiometric titrator, etc., and specifies the reagent requirements. Detailed description of Sample Handling steps, including dissolving methods and eliminating interfering elements. Standardized titration operation process, according to this standard, the silver content can be accurately determined, and it can help the mass control and value evaluation of silver alloy jewelry.