Corrosion damages the products over time. But what if we have the information about the time it takes an item to corrode? Yes that's possible through corrosion testing. Every product which is vulnerable to corrosion is tested for corrosion before it is launched in to the market. You as a consumer can ask the seller of the product about the time and factors it takes for the product to be affected by the moisture or water. Corrosion testing labs use method of Salt Spray Testing.