ISO 11426 Determination of Gold in Jewellery Alloys Testing
The ISO 11426 standard is a globally recognized method for the accurate determination of gold content in jewellery alloys. This service ensures that precious metal content meets specified standards, providing critical data for quality control and regulatory compliance.
Accurate gold content analysis is essential for maintaining brand integrity, ensuring customer satisfaction, and meeting international trade requirements. This testing method is particularly relevant for sectors such as luxury goods, fine arts, and high-end manufacturing where the purity of precious metals can significantly impact product value and reputation.
The process begins with sample preparation, which involves cleaning and dissolution to ensure accurate measurement of gold content. The dissolution step typically uses nitric acid or aqua regia under controlled conditions to ensure complete breakdown of the jewellery alloy while preserving the gold content.
Once the sample is dissolved, the solution undergoes volatilization using hydrogen chloride gas to remove unwanted elements such as silver and copper. This leaves behind a residue containing only gold and small amounts of other precious metals. The final step involves quantification through atomic absorption spectroscopy (AAS) or inductively coupled plasma optical emission spectrometry (ICPOES), both of which are highly precise methods for measuring trace amounts of elements.
The ISO 11426 method provides a reliable and reproducible approach to determining gold content, with results typically reported as weight percentages. This level of accuracy is crucial in the jewellery industry where even small variations can lead to significant financial implications. By adhering strictly to this standard, we ensure that our clients receive trustworthy data that meets international quality benchmarks.
Our team of experts uses state-of-the-art equipment and follows rigorous protocols to deliver accurate results every time. This service not only supports compliance with ISO 11426 but also enhances the overall reputation of your brand by providing transparent, verifiable information about the precious metals used in your products.
Applied Standards
| Standard | Description |
|---|---|
| ISO 11426:2010 | Method for determination of gold in jewellery alloys by atomic absorption spectrometry. |
| ASTM E583-19 | Standard test method for the quantitative analysis of gold and silver in precious metals by fire assay with gravimetric finish. |
| Methodology | Details |
|---|---|
| Sampling Procedure | Representative samples are taken from the jewellery to ensure a fair distribution of gold content. |
| Dissolution Method | Nitric acid or aqua regia is used for thorough dissolution of the sample, ensuring complete breakdown without loss of precious metals. |
Quality and Reliability Assurance
- Use of calibrated instruments to ensure precise measurements.
- Diligent quality checks at each stage of the testing process.
- Regular calibration of analytical equipment to maintain accuracy.
- Trained technicians adhering strictly to ISO 11426 guidelines.
Competitive Advantage and Market Impact
By offering ISO 11426 compliant gold content testing, we help our clients stay ahead of regulatory changes and industry trends. Accurate gold content analysis not only ensures compliance but also enhances the reputation of your brand among consumers who value authenticity and quality.
In a highly competitive market, having precise data on the precious metals used in jewellery can be the deciding factor between winning or losing a contract. Our service provides you with the confidence needed to make informed decisions about sourcing materials and producing high-quality products that meet global standards.
