LF-8120 - Prohesion vs. Salt Spray Testing

This paper describes a method of Cyclic Accelerated Corrosion known as the Mebon Prohesion Test. This test relates more closely to long term natural exposure than do conventional salt spray, humidity or sulphur dioxide tests. The Prohesion test usually uses an electrolyte of 0.4% ammonium sulphate and 0.05% sodium chloride. It also uses electrolyte spray at ambient temperature, dry off at elevated temperature, and rapid cycling between spray and dry conditions. Test results are shown comparing Prohesion to natural outdoor exposure and to conventional salt spray.

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