The Static Charge Reducer, a device to reduce static charges in distillate fuels to safe levels during loading or fueling operations, has been in commercial service for over five years and is now being used in several hundred installations. The field experience and laboratory tests accumulated over this time have now been analyzed to show how operation is affected by such variables as the dimensions of the reducer, the flow rate and electrical characteristics of the fuel, and the configuration of the tankage.To date, the principal applications involve the use of 4 or 6 in. diameter Reducers for the loading of distillate fuels into commercial tank trucks at flow rates of 400-800 gpm. However, available data for Reducers up to 12 in. in diameter, for flow rates up to 2000 gpm, and for various tank sizes are sufficient to indicate how the Reducer will perform under a wide variety of conditions.