ISO 21068-2 Standard Test for Chemical Analysis of Raw Materials and Refractory Products Containing Silicon Carbide

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 21068-2 testing. ISO 21068-2 specifies analytical techniques for determining the change in mass by heat treatment at specified temperatures and methods for determining the total carbon content, free carbon, silicon carbide, silicon, total silica, and free silica content of silicon.

This part of ISO 21068 represents a list of analytical methods approximately structured by material composition. However, it is still the user who must prove the applicability of the method, depending on the material and analytical requirements.

Determining the change in mass is defined as the loss or increase in mass resulting from heat treatment. Depending on the sample material, temperature and atmosphere, various methods are distinguished. Determination of the change in mass is carried out by a gravimetric method.

Heat treatments in air will result in loss of volatile matter and carbon and increase in mass due to oxidation, while heat treatment in argon will only result in loss of volatile matter.

Normally, the residue is used for other determinations. Therefore, the change in mass is taken into account in calculating the analytical result. The analytical method applied to the residue depends on the matrix and the parameters to be determined. It is up to the user to choose the appropriate analytical method.

EUROLAB assists manufacturers with ISO 21068-2 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.