Military Standard 810F-516 — MIL STD 810F is the standard that addresses a broad range of environmental conditions, with MIL STD 810F-516 being the section of the standard that is specific to functional drop.
This standard requires that the item can physically and functionally withstand the relatively infrequent, non-repetitive shocks encountered in handling, transportation, and service environments. This may include an assessment of the overall material system integrity for safety purposes in any one or all of the handling, transportation, and service environments.
IP-68 — IEL 60529 is the standard for Ingress Protection from water and dust for enclosures. IP-68 is the most rigorous classification in this specification.
The 1st number (in our case 6) refers to the level of protection against ingress of foreign objects. The range is 0-6. In our rating 6 stands for “Dust” sized particles.
The 2nd number (in our case 8) refers to the level of protection against water. The range is 0-8. In our rating 8 stands for continuous immersion deeper than 1 meter for 30 minutes or more.