Operating Salt Spray (Fog) Apparatus
[ASTM B 117-09]
This practive covers the apparatus, procedure, and conditions required to create and maintain the salt spray (fog) test environment.
This practice provides a controlled corrosive environment which has been utilized to produce relative corrosion resistance information for specimens of metals and coated metals exposed in a given test chamber.
The apparatus required for salt spray (fog) exposure consists of a fog chamber, a salt solution reservoir, a supply of suitably conditioned compressed air, one or more atomizing nozzles, specimen supports, provision for heating the chamber, and necessary means of control. The size and detailed construction of the apparatus is optional, provided the conditions obtained meet the requirements of this practice. 4.2 Drop of solution which accumulates on the ceiling or cover of the chamber shall not be permitted to fall on the specimens being exposed.