If you had to convince the FDA that pulsed electric or magnetic field such
as Dr. Hulda Clark 's zapper emits, can kill pathogens, you would have a hard
time, especially if you were a member of the Alternative Medicine community.

But, luckily you do not have to. The FDA already knows!

You can find all about disinfection with pulsed electric fields right here,
with a large number of scientific references:
http://vm.cfsan.fda.gov/~comm/ift-pef.html

exerpt;


Summary of Mechanisms of Microbial Inactivation

The application of electrical fields to biological cells in a medium (for example, water) causes buildup of electrical charges at the cell membrane (Schoenbach and others 1997). Membrane disruption occurs when the induced membrane potential exceeds a critical value of 1 V in many cellular systems, which, for example, corresponds to an external electric field of about 10 kV/cm for E. coli (Castro and others 1993). Several theories have been proposed to explain microbial inactivation by PEF. Among them, the most studied are electrical breakdown and electroporation or disruption of cell membranes (Zimermmann and Benz 1980; Zimermmann 1986; Castro and others 1993; Sale and Hamilton 1967; Vega-Mercado and others 1996a; 1996b). These theories will be explained in greater detail in Section 3.