From D's link

Reconstituted orange juice is inoculated with Saccharomyces at a concentration of 25,000 bacteria per cm3. The orange juice, maintained at 20° C., is placed in a plastic container, and the container is placed centrally within the above-described coil. The orange juice is subjected to 1 pulse of a 40 Tesla, 416 kHz, oscillating magnetic field. The temperature of the orange juice is measured to be 21° C. A sample of the orange juice is plated on standard plates, and a culture count shows a concentration of only about 6 bacteria per cm3.

A panel of experienced tasters cannot tell the difference between the orange juice subjected to the magnetic field and a control orange juice sample.