Mixing usually produces and maintains a uniform, homgeneous solution. Mixing two solutions often initiates a reaction by bringing substances into contact. Mixing techniques depend on the volume of the solution, the viscosity of the solution, the type of substances to be mixed, and the equipment available. Many techniques can also be described as stirring. Stirring is essentially the continuance of the mixing process so that as a reaction proceeds the solution remains homogeneous (with respect to concentration and/or temperature).
