2017-05-19 11:00
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PIKE 20170310全部产品清单 美国PIKE公司是世界上最大的红外 紫外等光谱的附件提供商。
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氢气纯度对柱效的影响及对柱使用寿命的影响 Hydrogen has been widely adopted as a carrier gas to replace nitrogen and helium in GC applications for a variety of reasons. Superior advantages include faster analysis, lower cost and the reliability of supply that hydrogen (generated on-site) offers. The purity of carrier gas is crucial for higher performance, lower maintenance and the longevity of analytical instruments. High purity carrier gas lowers baseline noise and provides better sensitivity and longer column and gas trap life. The required purity for hydrogen carrier gas is 99.9999% (research grade) for trace work under 1 ppm, or at least 99.9995% for most normal analyses. Recent analyses from two third-party testing laboratories aid in understanding the importance of using research grade hydrogen gas generators to supply carrier gas to analytical instruments. This paper focuses on evaluating different hydrogen sources and addressing the benefits of using research