Precision liquid nitrogen level regulato
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L. Olsen; R.A. Gordon
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Article
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1980
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Elsevier Science
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English
โ 195 KB
A large number of liquid nitrogen flU systems have been described in the literature which satisfy a wide range of experimental requirements ~'~. There have not, however, been any descriptions of simple flu systems which provide a rapid, precise regulation of the liquid nitrogen level for widely-diff