Salt Fog

Salt is one of the most pervasive chemical compound in the world. It is found in the oceans, the atmosphere, ground surfaces, lakes and rivers. In coastal regions, this exposure is intensified and, in a marine environment the exposure reaches maximum. As a consequence most equipment and materiel will be exposed to some form of salt during its life cycle.

Salt fog tests are performed to determine the resistance of equipment or materials to the effects of an aqueous salt atmosphere. The effects of exposure of material to the salt environment can be divided into three broad categories:

Corrosion effects on finishes
Effects on the operation of equipment
Physical effects on mechanical devices
This test is typically performed in a non-corrosive test chamber, at an elevated temperature of approximately 90° F. The test unit is suspended in an atmosphere of atomized salt solution for a typical duration of from one to seven days.

The salt fog composition can be Sodium Chloride (NaCl) or synthetic seawater.  The salt fog can be combined with Sulfur Dioxide to simulate acid rain or precipitate from combustion by products.

Testing is performed in accordance with Military, Commercial (ASTM) and Federal standards.
Typical Test Specifications
 MIL-STD-810  ASTM B-117
  MIL-STD-202  ASTM G-85
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