Percentage solution may refer to:
*
Mass fraction (or "% w/w" or "wt.%"), for percent mass
*
Volume fraction
In chemistry and fluid mechanics, the volume fraction φ''i'' is defined as the volume of a constituent ''V'i'' divided by the volume of all constituents of the mixture ''V'' prior to mixing:
:\phi_i = \frac
Being dimensionless, its unit is ...
(or "% v/v" or "vol.%"), volume concentration, for percent volume
* "Mass/volume percentage" (or "% m/v") in biology, for mass per unit volume; incorrectly used to denote
mass concentration (chemistry)
In chemistry, the mass concentration (or ) is defined as the mass of a constituent divided by the volume of the mixture .
:\rho_i = \frac
For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass con ...
. See
usage in biology
{{disambig