Before using our adhesion promoter, the bonding surface should be free of dust, grease, oil, moisture, and other contaminants. Therefore, we highly recommend cleaning the substrate with a lint-free cloth using solvents, such as ethanol or isopropanol alcohol or our Tesa® 60040 Industry Cleaner. Once the surface has been cleaned, you can go ahead and apply our Tesa® 60152 Adhesion Promoter. We recommend applying our adhesion promoters with a lint-free cloth, brush or sponge. Other than that, an applicator pen or felt applicator can be used. The entire surface should be coated thinly with adhesion promoter in order to reach the highest bonding performance. It is important to wait at least 2 minutes (and a maximum of 5 minutes) in order to give solvents time to evaporate. Please make sure to keep the prepared surface free of contami-nants prior to applying the tape. Once the substrate has been properly pretreated with Tesa® 60152 Adhesion Promoter, the open time for bonding is several hours/days. Please note that due to the multitude of available substrate formulations in the marketplace, it is recommended to test our Tesa® Adhesion Promoter prior to usage. • The shelf life of this product amounts to at least 12 months when stored at room tem-perature in its sealed original container. • For further information and advice on safe handling please refer to our safety data sheet (SDS), which is available upon request.