ABSTRACT
That a particle larger than an opening cannot possibly fit through it without being
distorted has been so commonly experienced that it is regarded as being self-evident. It is
on the basis of this axiomatic understanding that the mechanism for the separation of
particles from fluids by filter action is universally comprehended. Particles suspended in
fluids are restrained by their size from negotiating the pores of the filter while the
suspending liquid flows through unimpeded at a rate that is most usually a direct function
of the applied differential pressure.
