Positive-Pressure : Mode of dynamic headspace concentration extraction using a gas under positive pressure (usually nitrogen) to force the headspace through the adsorbent media
Technical Working Group for Fire and Explosions, Scientific Working Group for Fire and Explosions, and Fire Laboratory Standards and Protocols Committee, Glossary of Terms for Fire Debris Analysts and Fire Investigator, National Center for Forensic Science (NCFS) (NCFS Hosted by the University of Central Florida) Fl, USA 2012. This glossary of terms is an updated and completed version of the following original glossary of terms: IAAI Forensic Science Committee (1989) Glossary of terms related to chemical and instrumental analysis of fire debris, Fire and Arson Investigator, 40(2), pp 25-34. Version: October 11, 2005. (FrInv - Brit) {471}
