Harmonized Tariff Schedule of the United States · HTS code · HS 9027.90
9027.90.45: Lab analysis instrument parts, microtomes: Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89
Lab analysis instrument parts, microtomes
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 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:
- 9027.90 Microtomes; parts and accessories:
- Parts and accessories:
- Of electrical instruments and apparatus:
- 9027.90.45 Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
No additional measures recorded for this origin.
Same subheading in other tariffs
9027.90 Microtomes; parts and accessories
UK Free Third-country duty 1 tariff line 
EU Free Third-country duty 1 tariff line 
Türkiye 2.5% Third-country duty 1 tariff line 
Canada Free General (MFN) 1 tariff line 
Mexico Free General (MFN) 4 tariff lines 
Brazil 4% – 12.6% General (MFN) 4 tariff lines · average 7.8% 
Argentina Free – 12.6% General (MFN) 6 tariff lines · average 6.3% 
Peru Free General (MFN) 2 tariff lines 
New Zealand Free General (MFN) 2 tariff lines 
Japan Free General (MFN) 2 tariff lines 
Taiwan Free General (MFN) 2 tariff lines 
GCC Free General (MFN) 4 tariff lines 
Switzerland Free General (MFN) 1 tariff line 
Norway Free General (MFN) 1 tariff line 
North Macedonia Free General (MFN) 1 tariff line 
Nigeria 5% General (MFN) 1 tariff line USA lines: 9027.90
- 9027.90.20Microtomes; parts and accessories: microtomes
- 9027.90.45Printed circuit assemblies for the goods of subheading 9027.81 or 9027.89
- 9027.90.54Of electrophoresis instruments not incorporating an optical or other measuring device
- 9027.90.56Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
- 9027.90.59Of electrical instruments and apparatus: other
- 9027.90.64Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
- 9027.90.68Of optical instruments and apparatus: other
- 9027.90.84Of instruments and apparatus of subheading 9027.20, 9027.30, 9027.50, 9027.81 or 9027.89
- 9027.90.88Microtomes; parts and accessories: parts and accessories, other
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N364446 U.S. CBP
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The tariff classification of insulin pump patches and continuous glucose monitor patches from China
- N354553 U.S. CBP
The tariff classification of continuous glucose monitoring sensors from Canada
- N352482 U.S. CBP
The tariff classification of a heat sink assembly from China
- 600015344 HMRC
Fit test adapter kit, compatible with all cartridge half masks and full-face masks that are manufactured by the same trader. This kit enables quantitative fit testing to be performed accurately and providing confidence that the respirator fits the individual wearer. The adapter is designed to be…
- 600011278 HMRC
A mounting base for specific smoke or heat detectors that do not incorporate inbuilt sounders. The base is a low insertion force mounting base. It is made of plastic and incorporates stainless steel contacts for the detector terminals. The base also contains a plastic moulded card with snap…
16 rulings in total for this code
Legal notes
Additional notes
1. For the purposes of subheadings 90153010, 90258040, 90261021, 90261029, 90262020, 90268020, 90271010 and 90321020, the expression ‘electronic’ means instruments and apparatus which incorporate one or more articles of heading 8540, 8541 or 8542 but for the purposes of the foregoing, no account shall be taken of articles of heading 8540, 8541 or 8542 which have solely the function of rectifying current or which are included in the power pack of instruments or apparatus.
2. For the purposes of subheading 90211010, the expression "orthopaedic appliances" means appliances which are specially designed for a particular orthopaedic purpose, in distinction to products that might be used for various purposes (for example, products for overstrained joints, ligaments or tendons caused by sporting activities, type writing, and products which simply alleviate pain in the defective or disabled part of the body, for example, caused by inflammation).
The "orthopaedic appliances" must completely prevent a specific movement of the defective or disabled part of the body (for example, joints, ligaments, tendons) in order to exclude further injuries or bodily deformities or an aggravation of such injuries or deformities, as distinct from other products that cannot prevent specific movements, yet prevent reflex movements (movements carried out subconsciously) through the relative inflexibility of those products due to, for example, flexible splints, pressure pads, non-elastic textile material, restrictions through "Velcro-type" straps.
HTS code 9027.90.45 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 9027.90 (microtomes; parts and accessories).
The general duty is free, and quantities are declared in p/st.
For the same subheading, the UK duty is free, the EU duty is free, the Türkiye duty is 2.5%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 4%–12.6%, the Argentina duty is 0%–12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is free, the GCC duty is free, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.
The United States imported goods of subheading 9027.90 worth US$2.4bn in 2024; the largest supplier was Japan, and the United Kingdom ranked 7th with US$126m.
Questions and answers
What is the USA import duty for HTS code 9027.90.45?
The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is p/st. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Where does the United States import these goods from?
For subheading 9027.90 as a whole, the largest supplier in 2024 was Japan (US$393m), followed by Germany.