GDS Instruments Triaxial Testing System (GDSTTS) is a fully automated triaxial testing system designed principally for stress path testing. The GDSTTS is based on the classic Bishop & Wesley type stress path triaxial cell which controls stress directly on the sample. The system can be configured using Enterprise, Standard or Advanced level controllers. The 3850mm cell is for up to 7kN axial force, with the larger 70100mm cell up to 25kN. This is the system of choice for teaching laboratories and researchers.