| 摘要 |
PROBLEM TO BE SOLVED: To provide a membrane inlet mass spectrometer capable of improving responsiveness and extending life of a membrane. SOLUTION: The membrane inlet mass spectrometer D is provided with a sample introducing part 2 having membranes 5, 6 for selective permeation on an upstream side of an analyzing part 3. The membranes 5, 6 are supported by sintered filters 10, 10.
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