Founded in 1982

Alex Stewart International provides sector-leading competence and comprehensive inspection and analysis services, delivered on time at competitive prices.

Independent, and with over 30 years’ well respected experience throughout the industry, the Alex Stewart International network of laboratories provides ISO 17025 accredited assaying, metal testing and analysis services for base, minor and precious metals, including jewellery, ores and concentrates, ferro alloys, recycled scrap metal, metallurgically complex materials, coal and fertilisers. Working with Alex Stewart Agriculture, we are also able to provide a complete range of analytical and environmental services for agricultural commodities and products. 

Alex Stewart International’s laboratory network is fully equipped with traditional and modern instrumentation to deliver fast, reliable and accurate certificates for your commercial transactions. Our experienced team enables us to provide commercial interpretations of analysis, inspection, weighing and sampling and technical procedures and results.

Through Alex Stewart International’s operations network, we can also provide you with weighing, sampling and inspection services. Our professional and technically knowledgeable team provides a dedicated, high quality service to meet the specific requirements of the metal industry, mining companies, traders, metal producers and refiners, governments, banks and financial institutions and the general public


  • ASI Inspections, Loads and Discharge Operations
  • ASI Laboratory, Sample Preparation and Customer Services