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Oxygen, nitrogen and methane purification efficiencies for a common zirconium getter are measured in 1050Torr of xenon gas. Starting with impurity concentrations near 10 −6 g/g, the outlet impurity level is found to be less than 120 ×10 −12 g/g for O 2 and less than 950×10 −12 g/g for N 2 . For methane we find residual contamination of the purified gas at concentrations...
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