The Auto Trip Hammer is manufactured to comply with the Standard Penetration Test to B.S. 1377: Part: 9: 1990. SPT Drive Rods and a Split Tube Sampler are connected to base of the anvil, and driven into the ground by the falling weight. SPT Split Tube Sampler is designed for carrying out the Standard Penetration Test to B.S. 1377: Part9: 1990 and ASTM standards. The Top ball valve Adaptor, pair of Split Spoons, and open SPT Shoe compose a complete of SPT Sampler.