Salt spray test chamber is used to simulate corrosion test in artificial environment, it is used to check the method for testing quality of metal material with or without corrosion protection.

1. NSS: Neutral Salt Spray, it is a neutral test which means the test solution pH value is at 6.5-7.2.

2. AASS: Acetic Acid Salt Spray ,is the method in NSS solution with addition of glacial acetic acid in the pH range of 3.1 to 3.3.