If you were to design the ideal portable suction machine for emergency medical situations, what characteristics would you choose? The equipment used by EMS professionals takes a beating on a regular basis. Emergency calls happen in the most inopportune locations at any time of the day or night. The tools must be designed to withstand inclement weather, temperature extremes, and the rough-and-tumble arena of prehospital medicine. And when it comes to something as vital as your portable suction machine, there's no room for error. Let’s look at some important criteria when choosing the ultimate suction machine.