Physical Tests

Whether evaluating raw polymer batches, inspecting incoming raw materials, or comparing structural plastics, the ISO 178 three-point bend test provides a simple, standardized method to characterize material stiffness and strength under bending loads. The Labthink C610M Auto Tensile Tester is built for this purpose. Beyond standard tensile, peeling, and tearing tests for soft packaging and films, the C610M can easily be configured with custom 3-point bending fixtures to execute ISO 178 tests. Continue reading

Residue on Ignition (ROI), described in USP <281>,is a widely used test for determining the amount of non-volatile inorganic residue remaining after a sample is ignited under specified conditions.

Although the procedure may appear straightforward, several steps—including sample charring, sulfuric acid treatment, ignition temperature control, cooling, and repeated weighing—can have a direct impact on the final result. Continue reading