Can be used to test the relative resistance to corrosion of components or equipment, when exposed to a changing climate of a salt mist (spray), followed by a high humidity, at an elevated temperature.
Test specimens are placed in an enclosed chamber (a separate salt mist chamber and controlled humidity chamber are generally used), and exposed to a changing climate that comprises of the following 2 part repeating cycle. 1.0 to 2.0 hours exposure to a continuous indirect spray of salt water/synthetic seawater solution, which falls-out on to the specimens at a rate that consumes a volume of solution that represents approximately 1% of the volume of the test chamber per hour. During salt spray exposure the chamber temperature shall be at ‘normal laboratory temperature’. This is followed by 7 days exposure to a high humidity climate of 90 to 95%RH, in a chamber temperature of +35C. The entire test cycle is then repeated four times.