Abstract
In science, there are occasions when it is of value to know the number and distribution of different types of particles present in a solution. Calculation of these values is simplified if you can uniformly distribute the number of particles in a known volume over an established surface area. A number of procedures have been proposed. The best which we have used is direct centrifugation of particles to formvar/carbon-formvar coated electron microscope grids in an EM-90 rotor for the Beckman Airfuge®. This instrument makes use of the ability to pellet all material in a suspension using established centrifugation theory.
Publisher
Cambridge University Press (CUP)