The objective of this study is to construct and to study the efficiency of the air trap oil on the surface by a hypothesis in the study. Is the machine oil on the surface trap can trap stain oil. Instruments used for data collection, including data set period the work of air trap oil on the water. And record the results from the test, statistics used in the study. The study found that Air trap stain on the surface can keep oil are real. Help make the environment clean, and can prevent the oil flows into a large water resources and Can get rid of the trap to collect oil the hypothesis. The comparison trap oil sources found oil on water surface detectors can trap the oil floating on the water surface.
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