Hapsite Chemical Identification System portable field gas chromotograph/mass spectrometer, with microtrap injection mode, detects, identifies, and quantifies levels of volatile organic compounds (VOCs) and chemical warfare agents (CWAs) in concentrations as low as parts per trillion. Temperature-programming capabilities expand range of analysis in single run. Use to measure toxins in air,, and soil. Built-in (GPS) automatically records exact latitude and longitude of sampling location, along with field data and time and date stamp, allowing for legally defensible data in criminal and/or civil cases. Ideal for environmental agencies, military units, hazmat teams, and more.