Downloaded from https://www.everyspec.com MIL-STD-81OC 4. SUMMARY. The following details shal1 be specified in the.equipment specification: a. Pretest data required b. Failure criteria c. Applicable salt solution, if other than 5 percent d. Salt fog exposure period if other than 48 hours (see 3.1.6) e. Drying period if other than 48 hours (see 3.1.6) f. Inspection and operation after 24 hours of salt fog exposure where buildup of salt deposits item are critical to the proper operation of the test g. Specify if operation of electrical system is required (see 3.1.6). METHOD S09.1 509.1-8