Normal incidence shear wave transducers require a stiff, high viscosity couplant to support shear waves. Echo Shear Wave ultrasonic couplant transmits normal incidence (zero degree) shear waves, is nontoxic, water-soluble and easily applied and removed.
A small amount of Echo Shear Wave Couplant should be placed on the face of the transducer or the test piece and then pressed into a thin layer. For optimum coupling, it is important that the couplant layer be thin.