If a waterborne coating applied on a metal substrate is not correctly formulated, flash-rust will inevitably occur during the application and drying stages. Laboratoires LABEMA, thanks to their ranges of flash-rust inhibitors (AB RUST®, EMADOX® and VEGERUST®), help the formulator in preventing this "flash"oxidation. Our flash-rust inhibitors act as long as the coating contains water. A special test has been designed in our laboratory to evaluate the effectiveness of our additives in the coating where they will be used. The test duration varies depending on the coating to be tested. The results are expressed as degrees of corrosion.