In wet granulation, powders are bound together using adhesives rather than compacting motion. As more liquid is added to the mix, bridges form between the particles, which increase the tensile strength of bonds.
The process of wet granulation includes the massing of mix dry powders with granulating fluid. The fluid contains solvent, which can easily be removed when dried. The fluid should be non-toxic and may include water, isopropanol, ethanol and methylene; they can be used alone or combined with other solvents.