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Industrial Scientific 1810-9192 Calibration Gas: 50% LEL Methane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, Balance Nitrogen

Industrial Scientific 1810-9192 Calibration Gas: 50% LEL Methane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, Balance Nitrogen

$169.95
RAE Systems 600-0050-007 Calibration Gas: 2.5% vol. Methane, 18% Oxygen, 50 ppm Carbon Monoxide, 10 ppm Hydrogen Sulfide, Balance Nitrogen

RAE Systems 600-0050-007 Calibration Gas: 2.5% vol. Methane, 18% Oxygen, 50 ppm Carbon Monoxide, 10 ppm Hydrogen Sulfide, Balance Nitrogen

$169.95
RAE Systems 600-0050-070 Calibration Gas: 2.5% vol. Methane, 18% Oxygen, 50 ppm Carbon Monoxide, 10 ppm Hydrogen Sulfide, Balance Nitrogen

RAE Systems 600-0050-070 Calibration Gas: 2.5% vol. Methane, 18% Oxygen, 50 ppm Carbon Monoxide, 10 ppm Hydrogen Sulfide, Balance Nitrogen

$199.95
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