World Class Laboratory - Analysis & Testing
Without compromising quality and accuracy, Alex Stewart International’s testing laboratories tailor our services to deliver reliable, cost-effective and fast turnaround analytical services for a wide range of clients.
All of our laboratories are strategically located to work with international commerce and industry in Argentina, Brazil, Chile, China, India, Kenya, Malaysia, Peru, Thailand, Ukraine and the UK. All of our chemists are fully qualified and highly experienced, while our laboratories are supported by full sample preparation facilities for bulk samples.
Purpose-built and accredited by UKAS to ISO 17025
Our metal testing laboratory in Liverpool, UK, is accredited by UKAS to ISO 17025, purpose-built and fully equipped with traditional and modern instrumentation to provide fast, reliable and accurate results for commercial metal testing and metal analysis of copper, zinc, lead, gold, silver, platinum and palladium (also found in auto catalyst products),cobalt, tantalum, titanium, tin, iron, and minor metals from active mine productions.
We do this for metal refineries and on behalf of traders at the consumer end of the metal value chain, as well as geochemical and environmental analysis for approved mining-exploration companies and mine audits for governments in developing countries.
Our aquaculture and agriculture laboratories carry out GAFTA and FOSFA-approved analyses on sealed shipping samples, contract and international reference samples for oils, fats, oilseeds, edible nuts, fatty acids, acid oils, distillates, animal feed, tallow, render, grain, wheat, rye, barley, oats, millet, peas, beans, soya, fish and food products.
Our laboratories in Liverpool in the UK and Shanghai in China also provide food test lab analysis and certification for food-labelling factors such as chemical, nutritional and calorific values, trace metal detections for animal feeds and biomass. Microbiological testing for major pathogenic and spoilage microorganisms includes processed cooked or uncooked meats, food and dairy products.
Robust environmental analysis
Our environmental laboratories work to ISO standards and report organic and non-organic parameters to ppm and ppb levels. Types of environmental analysis include: waters and bacteria in water, pollutants, heavy metals, anions, seawater; soils and sewage treatment for heavy industry; environmentally sensitive mining projects and geological research and development projects.
All of our laboratories combine traditional wet chemistry methods with modern state-of-the-art laboratory instrumentation:
ICP MS/OES (+Trace Metal Detection). | Gas Chromatography. |
XRF. | GC mass Spectrometry. |
Atomic absorption. | Fibertec. |
Isoperibol calorimeter. | HPLC. |
DR 2800 spectrophotometer. | Viscometer. |
Flame photometry. | Karl Fischer. |
Carbon sulphur detectors. | Titration. |
Our Business
Our Locations
A Global Network
- ASI Inspections, Loads and Discharge Operations
- ASI Laboratory, Sample Preparation and Customer Services
- ASI Government Business Head Quarters