InterScience, Inc.'s joint venture subsidiary, Plasma Pyrolysis Systems, Inc., offers transportable, turnkey plasma pyrolysis systems.

Plasma pyrolysis is a process which reduces materials to their more basic chemical components by means of an intensely hot (thousands of degrees F) gas plasma. It is not a combustion process: no oxygen is required. They are especially useful for destroying infectious medical wastes, hazardous industrial wastes and shipboard wastes. Typically, waste is reduced to approximately 1/200th of its original volume. The residue is an inert glassy slag which can do no harm to the environment and can be landfilled or recycled as a construction material.

Plasma Pyrolysis Systems, Inc. (PPSI) offers a compact system for disposal of wastes where space is at a premium, such as on ships and at hospitals. PPSI's plasma pyrolysis systems reduce waste to between 0.5% and 5% of its original volume.