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7 results returnedMethod of analysis of impurities in helium in the parts-per-billion range
An improved method and apparatus for analysis of impurities in helium
Mass spectrometer method for determining parts per billion helium-3 in helium
A method for determining helium in water
Gravimetric preparation of primary standard gas mixtures in the parts per trillion range
Analysis for impurities in helium using the helium ionization detector
A method for the calibration of class 2 and class 4 standards of mass
Published Year
Subject
- Helium--Analysis (7) *
- Analytical chemistry--Quantitative (1)
- Chemistry, Analytic--Quantitative (1)
- Gas chromatography (1)
- Helium--Isotopes (1)
- Standards of mass--Calibration (1)
- Water--Analysis (1)
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