Mars's spec might be easier as the water can be taken out of equation.
Seriously this is for rough field work in topical countries.  I have
not put in acid and oil abuses, anyway I think the shell handle that.

>>It shall be subjected to fall, water splash, vibration, salt, high
humidity, submerge in water, dust and sand abuses.  Mil. spec - but
not certified.

>Where the heck are you bringing this PC?  Mars?  (In that case,
scratch NASA as a source :-)