TRI FLOAT OIL SKIMMER TRI FLOAT OIL SKIMMER The ATECO TFF Skimmer is one of the most versatile designs on the market. Made entirely from tough, corrosion resistant stainless steel, the TFF Skimmer can deal with a variety of aggressive liquids at varying depths and concentrations. Field of Use Waste water treatment. Leachate ponds. Petrochemical processing. Equalization tanks. Railway depots. Sumps & boreholes. Storage tanks. Sewage plants. Ponds & lakes. Airports. Sheltered harbors & docks. Manufacturing Facilities.