Optic Fuel Clean of NC (OFC) inspects and removes water, loose sludge,bacteria and sediment from fuel in UST's and AST's. A 7-stage filtrationprocess is used to remove the contamination and return the good fuelback into the tank and only discard the unwanted waste. This innovativeprocess visually inspects and cleans the fuel at the same time while your customers continue to pump their fuel so there is NO TANK DOWNTIME!