Geo-synthetics 
-  Resistance to: 
           -  Punching, traction, perforation
           -  Climatic trials
           -  Hydrolysis
-  Permeability
-  Filtration

Geo-membranes
-  Resistance to:
           -  Punching, traction
           -  Water
           -  Micro-organisms
-  Thickness/width, etc.