| 21. | In 1964, quadrupole mass spectrometer under the direction of Robert E . Finnigan.
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| 22. | Bennett's radio frequency mass spectrometer measured the masses of atoms.
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| 23. | These peptides are separated by liquid chromatography en route to a tandem mass spectrometer.
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| 24. | In recent decades some manufacturers have produced quadrupole mass spectrometers with true hyperbolic rods.
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| 25. | Some gas chromatographs are connected to a mass spectrometer which acts as the detector.
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| 26. | Recently, the performance of the Penning trap mass spectrometer ISOLTRAP has been considerably enhanced.
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| 27. | Back in the lab, he analyzed the substance on a gas chromatography mass spectrometer.
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| 28. | This is what makes it valuable in leak detection : see Helium mass spectrometer.
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| 29. | The Analytical Instrumentation Research Institute in Korea also developed a palm portable mass spectrometer.
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| 30. | Once operating pressure has been reached, the mass spectrometer can start its measuring operation.
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