Sonotrace is a Glycerine and Silicone-free, water-based couplant formulated for flaw detection and thickness gauging.

Sonotrace is the perfect couplant for use with applications where Halogens, Sulfur and low melting point metals must be kept to a minimum. It comes in two viscosities from medium viscosity to a very high viscosity gel and has an operational temperature range of 25°  – 175° F. Ferrous corrosion inhibition rating of 80.