Reduced viscosity

Reduced viscosity is equal to the ratio of the relative viscosity increment (${\displaystyle \eta _{i}}$) to the mass concentration of the species of interest.[1]

Reduced viscosity: ${\displaystyle {\frac {\eta _{i}}{c}}}$ . The unit must be specified; mL/g is recommended.

Relative viscosity increment: ${\displaystyle \eta _{i}={\frac {\eta -\eta _{s}}{\eta _{s}}}}$ (Where ${\displaystyle \eta _{s}}$ is the viscosity of the solvent.)[2]