4. Optics: measuring and testing
  5. By particle light scattering
  6. With photocell detection

Richard J. Cooper

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Laboratory nephelometer

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent

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Nephelometer instrument

Optics: measuring and testing – By particle light scattering – With photocell detection
Patent

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Nephelometer instrument

Optics: measuring and testing – By particle light scattering – With photocell detection
Patent

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Portable colorimeter

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Chemical
Patent

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Profile ID: LFUS-PAI-P-281635

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