Various cleanliness tests for environmental-friendly aqueous/semi-aqueous cleaning agents, which are alternatives to CFC 113 and 1,1,1,-trichloroethane, were carried out in this study. Cleaning tests of various commercially available aqueous/ semi-aqueous cleaning agents on cleaning efficiency of a non-aqueous cutting fluid were over 90% in a few minutes. And it may be concluded that the cleaning agents can replace existing chlorinated cleaning agents if some auxiliary equipments are supplemented. The experimental results for cleaning rosin flux by the aqueous/semi-aqueous cleaning agents showed that the cleaning efficiency of all the aqueous cleaning agents was lower than 50%, whereas that of semi-aqueous cleaning agents were higher than 90% in a few minutes. This implies that the semi-aqueous cleaning agents can replace the conventional cleaning agents if their problems of VOC and fire hazards are solved. On the other hand, the aqueous/semi-aqueous cleaning agents have a lower efficiency of grease cleaning compared to the existing chlorinated cleaning agents; they need much more cleaning time to have the same cleaning efficiency. In this study, three methods for cleanliness evaluation were tested examine the solvents effectiveness; the gravimetric method, the UV extraction method, and the image analyzer method. For cleaning the rosin flux (abietic acid) on the test sample pieces with an aqueous cleaning agent(UC-100), the experimental results by the gravimetric and the extraction methods shower 100% cleaning efficiency, while the results by the image analyzer method indicated that small amount of contaminants still remained on the surface of the test pieces. Thus, it may be concluded that these methods have some advantages and disadvantages in the evaluation of cleaning efficiency, nevertheless, they complement each other.