## relative viscosity

Synonym: viscosity ratio
https://doi.org/10.1351/goldbook.R05282
The ratio of the @V06627@ of the solution, $$\eta$$, to the @V06627@ of the solvent, $$\eta _{\text{s}}$$, i.e. $$\eta _{\text{r}} = \frac{\eta}{\eta _{\text{s}}}$$. Synonymous with viscosity ratio.
Source:
Purple Book, 1st ed., p. 62 [Terms]