PEF is a technology which causes biological cells to be ripped open and perforated. During the process, the biological cells are subjected to an electric field with high field strength, allowing plant and animal cells to be opened up (because of this opening effect, the technology can also be used to support or accelerate certain extraction or drying processes due to facilitated escape of water from the cell matrix). At higher power settings microbial inactivation will follow. The high electric field perforates the cell membranes of bacteria and thereby causes their inactivation. By making use of intense, but short high frequency pulses, there is only slight heating of the product itself while the bacterial inactivation effect remains. This lack of heating will benefit the sensory quality of the product. In order to generate the pulsed electric field, both a source and a treatment chamber are required. The treatment chamber consists of at least two electrodes, with an insulating region in between, where the treatment of the product takes place (see Figure 1).