Burning tests on very small samples.Chemical tests of fabrics, yarns and threads using the reagents listed below.

This document is designed to support teachers in assessing the risks when testing food ingredients with various chemicals.

This document is a description of a number of food tests that can be carried out in schools.

The corrosion resistance of iron and steel can be improved by treatment with sulfuric and phosphoric acids. Other metals are also affected through the introduction of chemicals.