| 90 | Optical instruments and apparatus, photographic, cinematographic, measuring, checking, precision, medical or surgical; parts and accessories |
| 9027 | Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or |
| 902730 | Spectrometers, spectrophotometers and spectrographs using of optical radiation (uv, visible, ir) |
| 9027300000 | Spectrometers, spectrophotometers and spectrographs using of optical radiation (uv, visible, ir) |