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- Scientific apparatus and instruments316
- Beckman Instruments, Inc.157
- Mass spectrometry117
- Bendix Corporation110
- Spectrometer industry110
- Time-of-flight mass spectrometry95
- Corporations88
- Mass spectrometers78
- Perkin-Elmer Corporation74
- Employees72
- Laboratories65
- Chemists40
- Ion sources30
- Spectrophotometer30
- Atomic absorption spectroscopy27
- Gas chromatography27
- Dow Chemical Company26
- Gas chromatography--Instruments25
- Women employees25
- Medical laboratories--Equipment and supplies22