Material analysis (OES)

Our optical emission spectrometer (OES) allows us to analyse the chemical composition of a material. The concentrations of the constituent elements, for example, carbon, silicon, chromium and nickel, are measured.

The results are then compared with standard values or certified concentrations to establish whether the material complies with specified requirements. The results can also be used to determine the weldability of a material or its suitability for use.

Prior to every material analysis, the instruments are tested using certified reference materials (CRM) with well-defined content to ensure the accuracy of the results.

A sample is melted and vaporised by applying a sufficiently high voltage to the OES. The light emitted by the atoms is captured by a highly sensitive detector known as a charge-coupled device (CCD), which converts light into electrial signals. The measured values are then compared with the calibratation data of the instrument. The measurements are converted into concentrations which are then displayed on the screen.

The materials we analyse are metals with iron, aluminum, copper or nickel as the main element. The metal that is present in the largest proportion is called the 'base'. If other bases are required, we simply add new software.

How much material is required?

When analysing the chemical composition of a material, the optimal sample size is 30x40 mm with two flat parallel surfaces. However, it is possible for the laboratory to analyse samples as small as 5x5 mm. 

Safe Control can also perform wet chemical analysis. About 5 grams of material is required for testing.


Catarina Wernlund
Phone: +46 (0)31-65 64 93

Johan Ageryd
Phone: +46 (0)31-65 64 94