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8 results returnedAn apparatus for determining the helium content of gas mixtures
Method of analysis of impurities in helium in the parts-per-billion range
Isotopic abundance of neon, argon, and nitrogen in natural gases :relationship to helium genesis
An improved method and apparatus for analysis of impurities in helium
Mass spectrometer method for determining parts per billion helium-3 in helium
Gravimetric preparation of primary standard gas mixtures in the parts per trillion range
An improved method for preparing gravimetric standard gas mixtures of helium-4 in nitrogen
Method and apparatus for direct determination of helium-3 in natural gas and helium
Published Year
Subject
- Helium--Analysis (4)
- Helium (3)
- Analytical chemistry--Quantitative (1)
- Chemistry, Analytic--Quantitative (1)
- Gases (1)
- Gases--Analysis (1)
- Helium--Isotopes (1)
- Helium--Measurement (1)
- Mass spectrometry (1)
- Mine gases--Analysis (1)
- Mixing (1)
- Natural gas (1)
- Nitrogen (1)
- Volumetric apparatus (1)
Author
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