How does VCI compare to desiccants in preventing corrosion?
VCI products and desiccants work in a completely different way. ARMOR VCI prevents corrosion by an electro-chemical process that forms a thin molecular layer of protection on a metal surface. This layer of protection is microscopic and does not alter the metal in any way, nor require removal of the VCI after being removed from the package. A desiccant is simply a moisture absorber. Desiccants absorb moisture but do not satisfactorily protect a metal surface from other electrolytes and contaminants that cause corrosion such as oxygen, manufacturing contaminants, oils or salt. For export packaging applications, we often recommend the use of both ARMOR VCI’s and our SHIELD line of desiccants.
