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That is, until you plug it in

& Hamling, J

Modern nose-only exposure tubes that allow body heat to dissipate are regarded by some as superior to whole-body exposure chambers because they eliminate dosing by nonrespiratory routes and allow the test concentration delivered to the animal to be closer to the concentration delivered to the system, by avoiding loss of the test compound on the walls, loss on the skin and fur of the animals, sedimentation and impaction of aerosol particles in the chamber, and chemical reactivity in the chamber (Pauluhn 2005)

By carefully tweaking the pressure and the size of that tiny orifice, engineers can design atomisers that produce a very specific droplet size and spray patternperfectly suited for its job, whether that's delivering fuel into an engine or vapour from an E-Cigarette