Ultracentrifugation contains the proceedings of the VIII. same-named symposium held in 1993, at Osnabrück, FRG. The volume presents the current concepts in analytical ultracentrifugation (AUC) including: . biochemical and biophysical applications . characterization of polyelectrolytes, synthetic polymers, gels and lattices . modern, fully computerized analytical ultracentrifuge Optima XL-A . future technical developments.