spray cabinet. Cabinet volume shall not be less than 0.4 m. Care should be taken to ensure homogeneous distribution of the sprayed solution. Design of the cabinet shall be so that drops of sprayed solution formed on its surfaces shall not fall on the test pieces being tested. The level of the salt solution in the salt reservior shall be automatically mainted to ensure uniform spray throughout test. A description of a typical spray cabinet is shown in 1.
The test cabinet shall be prepared and run for a minimum period of 24 h before the test pieces are placed within it. The neutral salt solution is made up by dissolving NaCl, in deminarelized water having conductivity lower than 30 S, to produce a concentration of 50 g/l+5g/l at 25 C+2 C.