Section XVIII · Optical, photographic, measuring, medical or surgical instruments
9027.90
Microtomes; parts and accessories:
Chapter
Optical, photographic, measuring, medical or surgical instruments
Heading
The product family within the chapter
Subheading
The specific good, identical worldwide
The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.
How the schedule reaches this code
- 90Optical, photographic, measuring, medical or surgical instruments
- 9027Instruments 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:
- Microtomes; parts and accessories:
Published US duty rates
Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.
- 9027.90.20.00MicrotomesNo.
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.45.00Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89No.
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.54.00Of electrophoresis instruments not incorporating an optical or other measuring devicekg
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.56Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.59Other
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.64.00Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89kg
- General
- Free
- Special (FTA)
- —
- Column 2
- 50%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.68.00Otherkg
- General
- Free
- Special (FTA)
- —
- Column 2
- 50%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.84.00Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89kg
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
- 9027.90.88.00Otherkg
- General
- Free
- Special (FTA)
- —
- Column 2
- 40%
No preferential rate published.
Countries without normal trade relations.
Schedule footnotes
- See 9903.88.15.
- See 9903.88.01.
- See 9903.88.03.
A reference to Chapter 99 means an additional action — a Section 232 or 301 measure, an exclusion, or a quota — applies on top of the rate above.
This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.
Other subheadings in heading 9027
- 9027.10Gas or smoke analysis apparatus:
- 9027.20Chromatographs and electrophoresis instruments:
- 9027.30Spectrometers, spectrophotometers and spectrographs using optical radiations (ultraviolet, visible, infrared):
- 9027.50Other instruments and apparatus using optical radiations (ultraviolet, visible, infrared):
- 9027.81Mass spectrometers
- 9027.89Other:
Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.