The Esophageal Intubation Detector (EID) from Wolfe Tory Medical, offers first responders proper ETT placement. A patented O-ring design prevents inadvertent air leaks and false readings. The EID is more accurate than colorimetric end-tidal CO2 in emergency intubation studies. This device reduces errors in clinical judgement and aspiration risk. It is accurate in cardiac arrest and produces immediate results. FDA-cleared for use with the Combitube, the EID is also latex free.