See Diagram above for ILLUSTRATION
How our VCI Works
•1. VCI products contain inhibitors which sublime or emit into the air space.  In order to ensure all metal surfaces are protected, enough VCI product must be added so that enclosed air space is saturated with gaseous VCI molecules.  This vaporizing ability enables VCIs to protect metals without direct application to the metal surface.
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2.A close up view illustrates how the VCI molecules layout onto the the metal surface (as a barrier) once equilibrium/saturation is reached in the vapor space.  The slightest amount of moisture will wet & ionize the molecules to form a barrier that will effectively protect metal surfaces for up to two years. 
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3.Call KPR for Boiler Water Treatment Products
•           Toll Free Customer Service at:  1-866-577-2326