DIN EN 16866:2018 Metallic and other inorganic coatings – layer potential measurement of galvanic multiple nickel layer systems (STEP test); German version EN 16866:2017
2017DIN EN 16866:2018 Metallic and other inorganic coatings – layer potential measurement of galvanic multiple nickel layer systems (STEP test); German version EN 16866:2017
2007DIN 50022:2007 Metallic and other inorganic coatings - Simultaneous thickness and electrode potential determination of individual layers in multilayer nickel deposits (STEP Test)