I need to design an experiment which investigates the effect of corrosion on different materials used in marine vessels. I am testing three metals: Steel, Aluminum and Iron in 4 conditions: acidic solution + less acidic solution basic solution + less basic solution salt water + differing conc. salt water (higher or lower or both) tap water Would this be a good way to test the different factors which affect corrosion? any help/advice suggestions will be greatly appreciated. Thanks!