The Dust Resistance test was performed in accordance with MIL-STD-810F, Method 510.4, Procedure I (Dust). An operating temperature of 140°F was used for this test. The upper non-operating temperature of 140°F was incorporated into the test as this is the "default" temperature given by the MIL-STD-810F guidelines. Silica flour as defined by the test standard was used. Failure was considered to have occurred if moving parts bind or are blocked, or if contacts or relays malfunctioned. The units must have continued to function also.
The Toughbooks continued to operate following dust testing. The keyboards were usable.
You're sitting in an aisle seat of an airplane working to complete a presentation. The food cart accidentally bumps into your tray table, knocking a cup of hot coffee onto your keyboard. The results could be disastrous, unless your keyboard, ports and internal circuitry have been designed to resist such hazards.
It's unavoidable. Notebooks get caught in the rain and accidentally dowsed with coffee just like you do.
Spill-resistant Keyboard & Touchpad
Certain Toughbook models feature spill-resistant keyboards and touchpads for protection against potential damage from the spills and splashes that are common to mobile computing environments.
The LCD panel on some Toughbook models is protected by an overlay panel which is sealed around the edges to provide extra protection against moisture and dust.
Sealed Ports & PC Card Slots
Hinged aluminum alloy covers with environmental seals protect the multimedia pocket, PC card slots and rear connection terminals.