Residue on Ignition (ROI) is a widely used analytical method todetermine the amount of inorganic impurities in a material. It is commonlyapplied in pharmaceutical, chemical, and food-related industries where materialpurity is critical.
In simple terms, ROI measures the non-combustible residue remainingafter a sample is subjected to high-temperature ignition.
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Under EU requirements, food contact materials must meet strict rules on authorized substances and migration limits. In particular, both overall migration and specific migration must be verified for the final product. However, some composite materials have shown risks of releasing substances beyond acceptable limits, especially under high temperature or acidic conditions. Continue reading
Technical exchanges such as this highlight the value of ongoing communication within the food contact material testing field. As regulatory frameworks and testing expectations continue to evolve, open dialogue between laboratories and technology providers remains essential for advancing practical innovation and supporting the next generation of automated compliance testing solutions. Continue reading
Labthink provides technical documentation, application consultation, and demonstration support for laboratories upgrading their loss on drying testing systems. Continue reading
In February 2026, our team visited a leading packaging manufacturer’s R&D laboratory in Finland to review their experience with the Labthink C840H Integrated Residue on Evaporation Testing System. Continue reading