A diagrammatic representation of data on @S05487@ from large particles, corresponding to the equation: \[\frac{Kc}{\Delta R (\theta)} = \frac{1}{\bar{M}_{\rm{w}} P(\theta)} + 2\ A_{2}c + \ldots\] and used for the simultaneous evaluation of the mass average molar mass, \(\bar{M}_{\text{w}}\), the second @V06625@ of the @C01032@, \(A_{2}\), and (usually) the z-average @R05121@, \(< s^{2} > _{\text{z}}^{\frac{1}{2}}\); \(c\) is the mass concentration of the solute, \(\Delta R(\theta)\) the excess @R05159@, and \(P (\theta )\) the @P04429@ that comprises (usually) the z-average @R05121@. \(K\) depends on the solute, the temperature and the type of radiation employed. Several modifications of the Zimm plot are in frequent use; the most common one uses the excess @S05487@ instead of the @E02236@.