It usually takes several months to develop or optimise coatings for corrosion protection as they must undergo a wide variety of longterm tests due to specified test parameters and/or standards. A quick assessment of the corrosion protection effect, which can deviate from the optimum conditions due to component geometry or environmental conditions, is also difficult to obtain quickly via long-term tests. Let's look at this using a practical example. An aqueous industrial coating is to be tested according to DIN EN 129644-6 [1]. As Table 1 shows, in this standard, corrosion protection tests are divided into five different ...