QED manufactures a range of Migrating Vapour Phased Corrosion Inhibitors (MVPCI's or VPI's for short) The way they work is easily explained.

 

The chemical elements within our product are given off as a vapor which will saturate a given airspace to a specific density, this vapor will form a mono-molecular coating on exposed and/or embedded steel, forming a barrier to further corrosion. The migrating part of the product, means that at a molecular level, the VPI will travel through not just air, but also seemingly impermeable dense materials (in fact there are micro pores in concrete allowing a fine vapour to travel through it) such as concrete (please see our Trials page for a real demonstration of the effectiveness).

 

 

The picture above left graphically shows the three elements in our Margel product inserted in reinforced concrete,