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如何算液氮日蒸發量?

時間:2017-06-20 15:19來源: 作者:admin 點擊:

如何算液氮日蒸發量?
很多客戶在使用液氮罐,最關心的一個問題就是,液氮罐內的液氮能保存多長時間,除了日常開啟液氮罐倒取液氮或者拿儲存的生物樣本,這些來回操作的情況會揮發一部分液氮外,液氮自身在液氮罐內也是一直在蒸發的,下面就班德液氮罐就來說一下關于液氮每天都能蒸發多少的問題,靜態液氮日蒸發量的測試計算方法,希望能幫到你,如果不會計算,建議直接咨詢班德液氮罐的技術人員。

產品靜態液氮保存期采用稱重法測試

測試需環境溫度為20&plusmn;30℃和常壓情況下進行,同時,測試不能在直接通風的場地進行。

測試應將容器灌入1/2以上的容器的液氮,靜放48小時,進行第一次稱重(A)克,3日后第一次稱重得(B)克,按下式計算,蒸發量Q

Q=A-B/3(克/天)

如果需要以容積(升)表示,用下式換算:

D=Q/808(升/天)

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