I have 40 years of experience, and specialize in the field of analytical chemistry with specific knowledge in the areas of polymer characterization, proteins and surfactants. I have published on such topics as polyelectrolytes, protein aggregation and heparin. I have testified on household cleaners, polymerization, light scattering, and size exclusion. At the age of 71, I am still active in research, managing a research group of four PhD students, one post-doctorate and one undergraduate, and writing grant proposals. Thus I combine accumulated experience and current awareness.