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What is USP Oxygen?

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What is USP Oxygen?

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UPS oxygen is oxygen gas that meets minimum content requirements set by the United States Pharmacopoeia of 99.0 mole % oxygen, maximum 300 ppm carbon dioxide and maximum 10 ppm carbon monoxide. There are seven different grades of USP gas of A, B, C, D, E, F and G. Each grade will have specific requirements for concentrations of oxygen (none lower than 99.0 mole %), water, methane, nitrogen, ethylene, acetylene, carbon dioxide (non higher than 300 ppm), carbon monoxide (none higher than 10 ppm), total hydrocarbons (as methane) ethane and other hydrocarbons, nitrous oxide, halocarbons and solvents as well as dew point levels.

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