| 9027.30 | | Spectrometers, spectrophotometers and spectrographs using optical radiations (ultraviolet, visible, infrared): | | | | |
| 9027.50 | | Other instruments and apparatus using optical radiations (ultraviolet, visible, infrared): | | | | |
| 9027.80.25 | 00 | Nuclear magnetic resonance instruments | No. | Free | | 40% |
| 9027.90.54 | 25 | Of articles of subheading 9027.20.50 | X | | | |
| 9027.90.54 | 30 | Of articles of subheading 9027.30.40 | X | | | |
| 9027.90.54 | 40 | Of articles of subheading 9027.50.10 | X | | | |
| 9027.90.54 | 50 | Of articles of subheading 9027.50.40 | X | | | |
| 9027.90.58 | 10 | Of articles of subheading 9027.10.20 | X | | | |
| 9027.90.64 | 00 | Of optical instruments and apparatus: | | | | |
| 9030.90.25 | 00 | For articles of subheading 9030.10: | | | | |
| 9030.90.88 | 11 | Of articles of subheading 9030.20 | X | | | |
| 9030.90.88 | 21 | Of articles of subheading 9030.31 | X | | | |
| 9030.90.88 | 22 | Of articles of subheading 9030.32 | X | | | |
| 9030.90.88 | 23 | Of articles of subheading 9030.33 | X | | | |
| 9030.90.88 | 31 | Of articles of subheading 9030.39 | X | | | |
| 9030.90.88 | 40 | Of articles of subheading 9030.40 | X | | | |
| 9030.90.88 | 56 | Of articles of subheading 9030.84 | X | | | |
| 9031.41.00 | | Other optical instruments and appliances: | | | | |
| 9031.41.00 | | For inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices | | Free | | 50% |
| 9031.41.00 | 20 | For inspecting photomasks or reticles used in manufacturing semiconductor devices | No. | | | |
| 9031.49.70 | 00 | For inspecting masks (other than photomasks) used in manufacturing semiconductor devices; for measuring surface particulate contamination on semiconductor devices | No. | Free | | 50% |
| 9031.80.40 | 00 | Electron beam microscopes fitted with equipment specifically designed for the handling and transport of semiconductor wafers or reticles | No. | Free | | 40% |
| 9031.80.80 | 60 | Equipment for testing the characteristics of internal combustion engines: | | | | |
| 9031.80.80 | 60 | For testing electrical characteristics | X | | | |
| 9031.90.45 | 00 | Of other optical instruments and appliances, other than test benches: | | | | |
