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 the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes; parts and accessories thereof:
This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.
Subordinate codes (7)
| Code | Description |
|---|---|
| 9027.10 | Gas or smoke analysis apparatus: |
| 9027.20 | Chromatographs and electrophoresis instruments: |
| 9027.30 | Spectrometers, spectrophotometers and spectrographs using optical radiations (ultraviolet, visible, infrared): |
| 9027.50 | Other instruments and apparatus using optical radiations (ultraviolet, visible, infrared): |
| 9027.81.00.00 | Mass spectrometers |
| 9027.89 | Other: |
| 9027.90 | Microtomes; parts and accessories: |
Frequently asked
- What does 9027 cover?
- 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 the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes; parts and accessories thereof:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
- Where does this data come from?
- Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.