Static Light Scattering
Determines weight-average molar mass from concentration-dependent static light scattering, using a known optical contrast (dn/dc); angular dependence can additionally give a radius of gyration when particles are large enough.
References
- Zimm, B.H. "The Scattering of Light and the Radial Distribution Function of Dense Fluids." Journal of Chemical Physics 21, no. 5 (1953): 934–936.