The Model C is Airgard's deluxe model. This model has a PLC based control box that monitors and controls all scrubber functions (water level, fresh water flow, pump water flow, gas inlet plunger position) and interfaces with the reactor and the facility. The PLC can be programmed by a laptop PC. This allows easy changes to timers and control logic that a customer may want for their specific needs. Additionally, the Model C model has an automated gas inlet plunger (AGIP). The AGIP can be programmed to plunge the gas inlet at a variety of different times or conditions.