HS Code 9027.90 : Microtomes; parts and accessories
MODULE 2: EXTRACTABLE ANSWER (AEO / SPEAKABLE)
Tariff data verified: July 2026
EN (Official WCO)
FR (Pending)
ES (Pending)
The 6-digit Harmonized System (HS) code for microtomes; parts and accessories is 9027.90. Under the 2026 United States (USITC HTS), the representative MFN general duty rate is Free [USITC HTS Tariff Schedule 2026].
MODULE 3: SIGNATURE A: HS DECODE VISUAL HIERARCHY
Chapter 90
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
Heading 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
Subheading .90
.90
Microtomes; parts and accessories
MODULE 4: SIGNATURE B: TARIFF MATRIX
Import Duty Rates by Destination
United StatesUnited KingdomEuropean UnionCanadaMexicoChinaJapanIndiaAustraliaSouth KoreaGermanyNetherlandsBrazilTürkiyeChinese TaipeiVietnamThailandIndonesiaMalaysiaSingaporeSaudi ArabiaUnited Arab EmiratesSouth AfricaEgyptIsraelChileColombiaPeruPhilippinesPakistanNew ZealandNorwayNigeriaKenyaMoroccoArgentinaEcuadorBangladeshUkraineKazakhstanQatarKuwaitOmanJordanBahrainSri LankaTunisiaGhanaCôte d'IvoireGeorgiaCambodiaPanamaCosta RicaDominican Republic
United States (USITC HTS 2026)
9027.90
MODULE 5: US IMPORT DUTY & FEE BREAKDOWN (LANDED COST STACK)
Federal Import VAT / GST
0.00%
US Has NO Federal VAT
Notice: Duty rates and trade remedies change frequently (Section 301, Section 232, anti-dumping orders, de minimis thresholds). Duty calculations are estimates for informational purposes only. Always verify exact rates with U.S. Customs and Border Protection (CBP) or a licensed customs broker prior to import.
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MODULE 6: Mandatory Customs Entry Document Matrix
Rule-Derived Customs Entry Package Checklist
UNIVERSAL DOCUMENT
Commercial Invoice
Itemized description, currency, Incoterms, seller/buyer details, and country of origin.
UNIVERSAL DOCUMENT
Packing List & Bill of Lading
Gross/net weight, container/seal numbers, piece count, and transport B/L or Air Waybill.
AGENCY-CONDITIONAL (PGA)
FDA Prior Notice / USDA Phytosanitary Cert
Rule-derived from verified PGA flag: Mandatory prior notice filing and health certificate.
MODULE 7: Regulatory Compliance & Partner Government Agency (PGA) Flags
ACE PGA Message-Set Flags:
FDA (DEV): FDA Medical Device Listing & Premarket Notification 510(k)
Official ACE program code: ACE/PGA [FDA 21 CFR 1.276].
MODULE 8: Trade Remedies (Section 301, Section 232, AD/CVD)
China Section 301 Tariff Status
7.5% – 25% Additional Duty (China Origin)
Section 232 Steel/Aluminum Status
Exempt (Non-Metal Commodity)
EU CBAM Carbon Alert
Not in Scope
MODULE 9: Free Trade Agreements (FTA) & Rules of Origin (RoO)
Browse all preferential trade calculators & compliance tools in our Customs Tools Hub ↗.
| Agreement Code | Trade Agreement / Program | Preferential Rate | Rules of Origin (RoO) Requirement |
|---|---|---|---|
| P | United States-Mexico-Canada Agreement (USMCA) | Free | Must meet USMCA Regional Value Content (RVC) or tariff shift rules. |
| KR | U.S.-Korea Free Trade Agreement (KORUS) | Free | Direct shipment from South Korea with KORUS Certificate of Origin. |
| AU | U.S.-Australia Free Trade Agreement | Free | Wholly obtained or tariff shift rule under US-Australia FTA. |
| A / D | GSP / African Growth & Opportunity Act (AGOA) | Free | 35% local value-add requirement for beneficiary country origin. |
MODULE 10: Logistics, Freight & Transport Specifications
Standard 20ft Container
~28 CBM / 28,000 kg Payload
Standard 40ft High-Cube
~68 CBM / 28,600 kg Payload
Stowage Factor & Handling
Standard commercial packaging for Microtomes; parts and accessories
MODULE 11: Official CBP CROSS Binding Classification Rulings
| Ruling # | Subject / Product Description | HTS Code | Ruling Date | Precedent Link |
|---|---|---|---|---|
| N354553 | The tariff classification of continuous glucose monitoring sensors from Canada | 9027.90.5695 | 2025-10-28 | View Precedent N354553 → |
US National HTS Tariff Lines (9027.90)
| HTS Code | Description | General Rate | Special (FTA) Rate | Column 2 Rate | Unit |
|---|---|---|---|---|---|
| 9027.90 | Microtomes; parts and accessories | Free | Free | Rate on request | — |
| 9027.90.20.00 | Microtomes; parts and accessories, Microtomes | Free | Free | 40% | No. |
| 9027.90.45.00 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89 | Free | Free | 40% | No. |
| 9027.90.54.00 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of electrophoresis instruments not incorporating an optical or other measuring device | Free | Free | 40% | kg |
| 9027.90.56 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 | Free | Free | 40% | — |
| 9027.90.56.25 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89, Of articles of subheading 9027.20.50 | Free | Free | Rate on request | kg |
| 9027.90.56.30 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89, Of articles of subheading 9027.30.40 | Free | Free | Rate on request | kg |
| 9027.90.56.40 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89, Of articles of subheading 9027.50.10 | Free | Free | Rate on request | kg |
| 9027.90.56.50 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89, Of articles of subheading 9027.50.40 | Free | Free | Rate on request | kg |
| 9027.90.56.95 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89, Other | Free | Free | Rate on request | kg |
| 9027.90.59 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Other | Free | Free | 40% | — |
| 9027.90.59.10 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Other, Of articles of subheading 9027.10.20 | Free | Free | Rate on request | kg |
| 9027.90.59.95 | Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Other, Other | Free | Free | Rate on request | kg |
| 9027.90.64.00 | Microtomes; parts and accessories, Parts and accessories, Other, Of optical instruments and apparatus, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 | Free | Free | 50% | kg |
| 9027.90.68.00 | Microtomes; parts and accessories, Parts and accessories, Other, Of optical instruments and apparatus, Other | Free | Free | 50% | kg |
| 9027.90.84.00 | Microtomes; parts and accessories, Parts and accessories, Other, Other, Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 | Free | Free | 40% | kg |
| 9027.90.88.00 | Microtomes; parts and accessories, Parts and accessories, Other, Other, Other | Free | Free | 40% | kg |
US 10-Digit Statistical HTS Breakout (9027.90)
14 Declarable Lines · USITC 2026
⚠️ Section 301 (China) Additional Tariff Alert
Heading 9903.88.15, 9903.88.01, 9903.88.03
If imported from China, merchandise under this HTS line carries an additional Section 301 tariff (see HTS heading 9903.88.15, 9903.88.01, 9903.88.03). Applicable Section 301 rates depend on country of origin — verify exact rate and exemptions at hts.usitc.gov.
| 10-Digit HTS Code | Statistical Description | General MFN Rate | FTA / Special Rate | Unit |
|---|---|---|---|---|
| 9027.90.20.00 | 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: Microtomes; parts and accessories: Microtomes | Free | Base MFN | No. |
| 9027.90.45.00 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89 | Free | Base MFN | No. |
| 9027.90.54.00 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Of electrophoresis instruments not incorporating an optical or other measuring device | Free | Base MFN | kg |
| 9027.90.56.25 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 Of articles of subheading 9027.20.50 | Free | Base MFN | kg |
| 9027.90.56.30 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 Of articles of subheading 9027.30.40 | Free | Base MFN | kg |
| 9027.90.56.40 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 Of articles of subheading 9027.50.10 | Free | Base MFN | kg |
| 9027.90.56.50 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 Of articles of subheading 9027.50.40 | Free | Base MFN | kg |
| 9027.90.56.95 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 Other | Free | Base MFN | kg |
| 9027.90.59.10 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Other Of articles of subheading 9027.10.20 | Free | Base MFN | kg |
| 9027.90.59.95 | 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: Microtomes; parts and accessories: Parts and accessories: Of electrical instruments and apparatus: Other: Other Other | Free | Base MFN | kg |
| 9027.90.64.00 | 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: Microtomes; parts and accessories: Parts and accessories: Other: Of optical instruments and apparatus: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 | Free | Base MFN | kg |
| 9027.90.68.00 | 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: Microtomes; parts and accessories: Parts and accessories: Other: Of optical instruments and apparatus: Other | Free | Base MFN | kg |
| 9027.90.84.00 | 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: Microtomes; parts and accessories: Parts and accessories: Other: Other: Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89 | Free | Base MFN | kg |
| 9027.90.88.00 | 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: Microtomes; parts and accessories: Parts and accessories: Other: Other: Other | Free | Base MFN | kg |
MODULE 12: Candidate Subheadings & Related Codes
| Related HS Code | Heading Category | Action |
|---|---|---|
| 9027.10 | Subheading under Heading 9027 | HS 9027.10 undefined Duty & Entry Rules → |
| 9027.20 | Subheading under Heading 9027 | HS 9027.20 undefined Duty & Entry Rules → |
| 9027.30 | Subheading under Heading 9027 | HS 9027.30 undefined Duty & Entry Rules → |
| 9027.50 | Subheading under Heading 9027 | HS 9027.50 undefined Duty & Entry Rules → |
MODULE 13: Industry Classification & Crosswalk Mesh (NAICS & Schedule B)
U.S. Census NAICS Code
U.S. Census Schedule B (Exports)
Official Primary Sources & Authority References
USITC HTS Chapter 90 Tariff Schedule (2026) ↗
Official U.S. 10-digit tariff lines and general duty rates for Microtomes; parts and accessories.
CBP CROSS Ruling Database (9027.90) ↗
Binding customs classification precedents for Heading 9027.
MODULE 14: Frequently Asked Questions (FAQ) & Operational Guide
What is the 6-digit WCO tariff classification and United States (USITC HTS) general duty for Microtomes; parts and accessories?
Under WCO Harmonized System 2022 and United States (USITC HTS), Microtomes; parts and accessories is classified under HS 9027.90 (Heading 9027, Chapter 90). The representative US MFN general duty rate is Free.
How is HS 9027.90 distinguished within Heading 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)?
Heading 9027 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. Subheading 9027.90 specifically isolates Microtomes; parts and accessories. Importers must verify whether physical characteristics, processing state, or composition require alternative subheadings under Heading 9027.
What are the primary candidate subheadings related to HS 9027.90?
Related subheadings under Heading 9027 include 9027.10, 9027.20, 9027.30, 9027.50, 9027.81, 9027.89. Classification depends on processing stage, decaffeination, purity, or material form.
What mandatory commercial entry documents are required to import Microtomes; parts and accessories?
Commercial Invoice (detailing Incoterms, currency, and origin), Packing List, Bill of Lading (or Air Waybill), CBP Form 7501 Entry Summary, and a continuous customs bond are required for formal entries.
Can goods under HS 9027.90 enter duty-free under USMCA or Free Trade Agreements?
Yes. Eligible goods originating in Mexico, Canada, South Korea, or Australia enter duty-free under preference SPI codes (P, KR, AU) provided they satisfy Regional Value Content (RVC) or tariff-shift rules with a valid Certificate of Origin.
What is the US formal entry threshold for shipments of Microtomes; parts and accessories?
Commercial shipments of Microtomes; parts and accessories with a customs value exceeding $2,500 USD require formal customs entry (CBP Form 7501) and a continuous entry bond. Informal entry applies to lower values.
How can an importer obtain a binding CBP classification ruling for HS 9027.90?
Importers may submit an e-Ruling request under 19 CFR Part 177 to CBP National Commodity Specialist Division (NCSD) to obtain a legally binding tariff classification ruling prior to importation.
What U.S. Census NAICS industry code corresponds to HS 9027.90?
HS 9027.90 maps to NAICS code 334516 (Navigational, Measuring, Electromedical, and Control Instruments Manufacturing) under official U.S. Census Bureau trade concordance tables.
Does the United States assess federal VAT or GST on imports of HS 9027.90?
No. The United States does NOT charge a federal Value-Added Tax (VAT) or Goods and Services Tax (GST) on imports. Importers pay customs duty + MPF + HMF (if ocean freight).
How are Merchandise Processing Fee (MPF) and Harbor Maintenance Fee (HMF) calculated?
MPF is assessed at 0.3464% of entered value (min $32.71, max $634.62 per entry). HMF is assessed at 0.125% on ocean freight shipments entering US ports.
What is the Section 321 de minimis duty-free threshold for HS 9027.90?
Under Section 321 (19 U.S.C. 1321), eligible shipments valued at $800 USD or less imported by one person on one day enter duty-free and tax-free.
What U.S. Customs bond requirements apply to commercial entries under HS 9027.90?
Formal entries with customs value exceeding $2,500 USD require a continuous customs entry bond (CBP Form 301) to guarantee payment of duties, taxes, and fees.
What Importer Security Filing (ISF 10+2) rules apply to ocean imports of HS 9027.90?
Ocean container shipments bound for US ports require electronic ISF 10+2 submission via ACE at least 24 hours before loading at foreign ports.
How do USMCA preference rules apply to commercial imports under HS 9027.90?
Qualifying originating goods from Canada or Mexico meeting USMCA tariff-shift or Regional Value Content (RVC) rules enter duty-free under SPI code 'P'.
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