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8/21/2003 11:54:39AM <br /> Compound Listing <br /> Modified ASTM D-1945 (Sh)-02, CO2, CH4, &N2 <br /> CAS Number Compound Detection Limit <br /> 7782-44-7 Oxygen 0.10 <br /> 7727-37-9 Nitrogen 0.10 <br /> 74-82-8 Methane 0.00010 <br /> 124-38-9 Carbon Dioxide 0.0010 <br /> 1 <br />