The cup test is a key test to help you identify if your Cosmichrome® Select e-Gun™ is spraying accurately during the plating step.

To achieve a high-quality finish, your Select e-Gun™ should be spraying equal parts of G4 and G5 solutions. With time the nozzles may get dirty, or a solenoid valve may have some debris, particles blocking the pathway and causing resistance on one side. By performing this cup test, you will be able to identify if there is a problem and how to address it.