醫用氮氣中規定：
含氧氣不得過 0.005%。
含水分不得過 0.0067%。
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浩瀚色譜（山東）應用技術開發有限公司，研發氣相色譜法測定藥典氮氣中微量氧和水分的含量，面積外標法定量，結果滿意。
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浩瀚色譜，提供詳細的分析方案
Medical nitrogen specifies:
The oxygen content should not exceed 0.005%.
The moisture content should not exceed 0.0067%.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed a gas chromatography method to determine the content of trace oxygen and water in the nitrogen gas of the Pharmacopoeia. The area external standard method has been used for quantification with satisfactory results.
Vast chromatography, providing detailed analysis plans
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滕州市浩瀚色譜儀器技術服務有限公司
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