Upgrade your outdated, under-performing or noncompliant installed emergency eyewash/shower combination! This revolutionary inverted flow eyewash/shower head is the only one on the market that provides a Medically Superior Response consistent with all EMT, emergency room and doctors' office protocols by sweeping contaminants away from the vulnerable nasal cavity. (Traditional models irrigate from the outside edge of the eye back toward the nose, where contaminants can then be flushed into the nasal cavity.) Zero Vertical Velocity eyewash stream with even laminar flow ensures enhanced comfort, stability and effectiveness. The hydrodynamic shower head design makes water distribution equal across the entire footprint of the flow, which increases overall effectiveness while providing a more comfortable experience for the user.