PNNL's Explosives Vapor Detection Technology (IMAGE) DOE/Pacific Northwest National Laboratory Caption While a commercial-off-the-shelf mass spectrometer is used, the truly unique capability analysis lies in PNNL's ionization chemistry approach developed on the front end of the system. Credit PNNL Usage Restrictions Give credit to PNNL License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.