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NIST Technical Note 1781 Modeling and Measuring the Effects of Portable Gasoline Powered Generator Exhaust on Indoor Carbon Monoxide Level
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Multi Calibration Gas Mix: 20 PPM Hydrogen Sulfide, 60 PPM Carbon Monoxide, 1.45% Methane (58% LEL Pentane Simulant), 15% Oxygen, Balance Nitrogen (58 Liter): Amazon.com: Industrial & Scientific
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