Dell Latitude E6320 Owner's Manual page 102

Environmental
Operating
Non-Operating
Airborne contaminant level
102
–15.24 m to 3048 m (–50 ft to 10,000 ft)
–15.24 m to 10,668 m (–50 ft to 35,000 ft)
G1 as defined by ISA-71.04–1985