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1.05% Butane, 20 PPM Hydrogen Sulfide, balance Nitrogen

0.9% Methane, 0.9% Ethane, 0.9% Propane, 0.9% Iso-Butane , 0.9% Butane, balance Nitrogen

8% Butane, 15% Carbon Dioxide, balance Nitrogen

8% Butane, 13.8% Carbon Dioxide, balance Nitrogen

Calibration Gas 0.7% Vol Butane, balance Nitrogen

Calibration Gas 8% Butane, balance Nitrogen

Calibration Gas 4600 PPM Butane (.46% Vol.) balance Air

Calibration Gas 1,000 PPM Butane, balance Helium

Calibration Gas 0.4% Vol (4000 ppm) Butane

Calibration Gas 0.8% vol Butane , balance Air

Calibration Gas 0.8% Vol Butane, balance Nitrogen

Calibration Gas 0.75% vol Butane, balance Air

Calibration Gas 0.0873% vol. (873 PPM) Butane, balance Nitrogen

Calibration Gas 0.9% Butane, balance Air

Calibration Gas 7.7% Butane, balance Nitrogen