![]() ![]() G01N21/67- Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g.G01N21/66- Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g.G01N21/62- Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light.atomic absorption spectrometry using infra-red light for analysing liquids, e.g. G01N21/3577- Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g.atomic absorption spectrometry using infra-red light ![]()
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