Manufactured specifically for the Rapiscan IT4DX/5X this is the internal calibrant that replaces the need for Calibration Swabs. The Calibrant is an essential component of the IT4DX with an estimated useful life of approximately five years. Like all consumables required for use with the Itemiser Explosive Detector and Itemiser Narcotic Detector, the manufacturer recommends that only OEM consumables be used to insure the highest detection capabilities and reliability.