If you have any questions regarding the best VCI protection for your needs, we advise consulting a ZERUST/EXCOR representative. ZERUST/EXCOR possesses wide-ranging testing capabilities, which quickly enable us to determine the optimum method of protecting a given metal item. We also can send samples for customers to conduct their own tests. First, try packing identical parts simultaneously and under identical conditions, one part in a normal film or your current packaging and one in ZERUST/EXCOR film. Next, store these parts for several days in the most challenging conditions they will be in, such as high humidity, or move them from warm to cool places in your warehouse, similar to shipping conditions. If the part packed in normal packaging shows signs of corrosion, while the one packed in ZERUST/EXCOR VCI film shows none, it can be assumed that the part requires VCI protection.