The Environics Series 6103 Ozone Transfer Standard / Multi-Gas Calibrator is a computer controlled, state-of-the-art instrument for dynamic multi-point calibration of ambient air analyzers. The Series 6103 automatically performs zero, precision, span and multi-point calibrations using NO, NO2, SO2, CO,O3, hydrocarbons and other gases of interest. The 6103 meets or exceeds all U.S. Environmental Protection Agency requirements.