![4-Gas, 116L-413-18, AL, Calibration Gas Mixture, 50 PPM Carbon Monoxide, 2.5% Methane [ 50% LEL Methane], 10 PPM Hydrogen Sulfide, 18% Oxygen, in Nitrogen](http://datamarinesupply.com/cdn/shop/files/CalibrationGas116_018f3bcc-26b8-4ae8-b660-18e57e81e488.jpg?v=1771212850&width=533)
4-Gas, 116L-413-18, AL, Calibration Gas Mixture, 50 PPM Carbon Monoxide, 2.5% Methane [ 50% LEL Methane], 10 PPM Hydrogen Sulfide, 18% Oxygen, in Nitrogen
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$445.00 USD
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