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- Scientific apparatus and instruments240
- Mass spectrometry98
- Beckman Instruments, Inc.97
- Bendix Corporation96
- Spectrometer industry96
- Time-of-flight mass spectrometry87
- Corporations77
- Perkin-Elmer Corporation72
- Mass spectrometers69
- Laboratories61
- Employees58
- Chemists29
- Ion sources29
- Atomic absorption spectroscopy27
- Spectrophotometer24
- Women employees24
- Women in science21
- Gas chromatography19
- Dow Chemical Company17
- Gas chromatography--Instruments16