This document specifies test methods for the determination of tensile properties of polymeric geosynthetic barriers (PE (PEHD and PELLD@ FPO (EVA@ FPP@ and PEVLD)@ PVC-P and EPDM). Method A is suitable for testing polymeric geosynthetic barriers (GBRP)@ PVC@ EPDM and FPO (EVA@ FPP and PEVLD)@ non-reinforced (including 80gsm glass fleece) and without backing. Method B is suitable for testing polymeric geosynthetic barriers (GBRP)@ PE (HDPE and PELLD)@ nonreinforced and without backing. Method C is suitable for testing polymeric geosynthetic barriers (GBRP)@ reinforced and/or with backing. Method D is suitable for measuring modulus (if required) of all non-reinforced products.