What is the difference between salt fog and salt spray testing?
From a testing standpoint, salt fog testing and salt spray testing are the exact same test. These are often referred to by these different names because the levels of salt being applied vary accordingly to the specific environmental conditions needed to be replicated. The test typically applies salt and/or sea mist to coated or painted marine, automotive and military equipment, testing for corrosion over time through an accelerated process.
The concentration of salt and duration of testing are the two variables that are adjusted in order to tailor the test to your requirements. Thus, the same test is sometimes referred to as salt for or salt spray.