SICPAPROTECT® Red Oil Test

To reproduce the effect of banknote soiling from sebum, a solution containing vegetable oil (olive oil) and a red dye (to make the test visible) is prepared. The solution is applied with a brush to three banknote specimens: an unvarnished one, one with SICPAPROTECT® Core and one with SICPAPROTECT® Dew. As you can see, the solution wets the surface of SICPAPROTECT® Core but not SICPAPROTECT® Dew. The latter completely repels the red olive oil solution.