Geomembrane performance is evaluated through a long series of various tests including mechanical, chemical, and hydraulic conductivity tests. Mechanical tests can include testing for puncture resistance and tear strength assessments. These determine a material's ability to withstand external forces and prevent breaches or damage.
Chemical compatibility tests evaluate how geomembranes interact with the substances they contact. This ensures that liners maintain their integrity when exposed to mining fluids and leachates. Tests for UV resistance assess the material's durability under prolonged exposure to sunlight -- crucial for outdoor applications in mining environments.