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HTS heading 9027: Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instrum

Heading 9027 of the US Harmonized Tariff Schedule covers 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. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.

Official USITC HTS, 2026HTSRev22 · check on hts.usitc.gov

Heading 9027 at a glance

Goods named in this heading (official line texts): Electrical, Optical instruments and apparatus, Electrical, Electrical, Exposure me…, Electrical, Mass spectrometers, Nuclear magnetic resonance instruments, Electrical, Microtomes, Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89, Of electrophoresis instruments not incorporating an optical or other measuring device, Of instruments and apparatus of subheading 9027.20, 9027..

Subheadings (6-digit)

All tariff lines in heading 9027

LineDescriptionGeneralSection 301 (China)Exclusions
9027.10.20Gas or smoke analysis apparatus: ElectricalFreeList 2 +25% (1 product exclusion may apply)1
9027.10.40Optical instruments and apparatusFreeList 3 +25%
9027.10.60Other: OtherFreeList 3 +25%
9027.20.50Chromatographs and electrophoresis instruments: ElectricalFreeList 1 +25%
9027.20.80Chromatographs and electrophoresis instruments: OtherFreeList 1 +25%
9027.30.40Spectrometers, spectrophotometers and spectrographs using optical radiations (ul…: ElectricalFreeList 1 +25%
9027.30.80Spectrometers, spectrophotometers and spectrographs using optical radiations (ul…: OtherFreeList 1 +25%
9027.50.10Other instruments and apparatus using optical radiations (ultraviolet, visible, …: Exposure me…1.2%List 1 +25%
9027.50.40Other: ElectricalFreeList 1 +25%
9027.50.80Other: OtherFreeList 1 +25%
9027.81.00Other instruments and apparatus: Mass spectrometersFreeList 1 +25%
9027.89.25Nuclear magnetic resonance instrumentsFreeList 1 +25%
9027.89.45Other: ElectricalFreeList 1 +25%
9027.89.80Other: OtherFreeList 1 +25%
9027.90.20Microtomes; parts and accessories: MicrotomesFreeList 4A +7.5%
9027.90.45Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89FreeList 1 +25%
9027.90.54Of electrophoresis instruments not incorporating an optical or other measuring deviceFreeList 1 +25%
9027.90.56Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89FreeList 1 +25%
9027.90.59Other: OtherFreeList 1 +25%
9027.90.64Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89FreeList 1 +25%
9027.90.68Of optical instruments and apparatus: OtherFreeList 3 +25%
9027.90.84Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89FreeList 1 +25%
9027.90.88Other: OtherFreeList 1 +25%

All of chapter 90 · Chapter 90 rate summary · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.

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