Corrosion of ferrous metals has normally been prevented by painting, greasing or the use of desiccants in airtight containers. All these methods are expensive, both in time and materials. Painting involves long drying times or special spray booths, grease usually requires removing by the customers and is often objectionable, while airtight containers are both expensive and difficult to achieve.

Volatile Corrosion Inhibitors (VCI) are a different approach to the problem, since they work on the principle of preventing corrosion, even in the presence of moisture and oxygen, since being volatile, they will protect articles which are 30 cm or more away of from the vapour source. Simply put, VCI's are convenient, clean and inexpensive. All VCI papers work in the same way, but NOVA-KR VCI has the following advantageous points:

a) A quick acting volatile inhibitor giving immediate protection.
b) A long-term volatile inhibitor ensuring that protection continues for many months.
c) A contact inhibitor which prevents corrosion where there is an excess of water present