| Abstract: | A novel data interpretation method is presented which is derived from weighted least squares analysis. Given the steep dependence of the Rayleigh factor on concentration, a Zimm‐plot based regression of weight average molar mass and the RMS radius of gyration is strongly influenced by data over an optimum concentration range, which can be quite narrow for some polymer‐solvent combinations. The “one‐concentration method” exploits this sensibility to improve the precision in molar mass and radius of gyration measurements to ±4%. The theoretical prediction of the optimum concentration is included. The one‐concentration method is applied to polymers in organic solvents as well as to water‐soluble polyelectrolytes. |
