# United States tariff lines under HS 9027.90

> The United States tariff splits HS 9027.90 (microtomes; parts and accessories) into 14 national lines: 9027.90.20.00 (microtomes), 9027.90.45.00 (printed circuit assemblies for the goods of subheading 9027.81 or 9027.89), 9027.90.54.00 (of electrophoresis instruments not incorporating an optical or other measuring device), 9027.90.56.25 (of articles of subheading 9027.20.50) and 10 others. Every United States line under 9027.90 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/902790
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 90](https://border.bot/countries/united-states/hs-codes/90) / [9027.90](https://border.bot/countries/united-states/hs-codes/902790)

## Key facts

- HS subheading: [9027.90](https://border.bot/hs-codes/902790)
- Duty (MFN): Free
- National lines: 14
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof

## United States lines under 9027.90

The United States tariff splits HS 9027.90 (microtomes; parts and accessories) into 14 national lines: 9027.90.20.00 (microtomes), 9027.90.45.00 (printed circuit assemblies for the goods of subheading 9027.81 or 9027.89), 9027.90.54.00 (of electrophoresis instruments not incorporating an optical or other measuring device), 9027.90.56.25 (of articles of subheading 9027.20.50) and 10 others.

Every United States line under 9027.90 is free of general (MFN) duty.

- [9027.90.20.00](https://border.bot/countries/united-states/hs-codes/9027902000) Microtomes; parts and accessories, Microtomes. Duty (MFN): free
- [9027.90.45.00](https://border.bot/countries/united-states/hs-codes/9027904500) 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. Duty (MFN): free
- [9027.90.54.00](https://border.bot/countries/united-states/hs-codes/9027905400) Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Of electrophoresis instruments not incorporating an optical or other measuring device. Duty (MFN): free
- [9027.90.56.25](https://border.bot/countries/united-states/hs-codes/9027905625) 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. Duty (MFN): free
- [9027.90.56.30](https://border.bot/countries/united-states/hs-codes/9027905630) 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. Duty (MFN): free
- [9027.90.56.40](https://border.bot/countries/united-states/hs-codes/9027905640) 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. Duty (MFN): free
- [9027.90.56.50](https://border.bot/countries/united-states/hs-codes/9027905650) 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. Duty (MFN): free
- [9027.90.56.95](https://border.bot/countries/united-states/hs-codes/9027905695) 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. Duty (MFN): free
- [9027.90.59.10](https://border.bot/countries/united-states/hs-codes/9027905910) Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Other, Of articles of subheading 9027.10.20. Duty (MFN): free
- [9027.90.59.95](https://border.bot/countries/united-states/hs-codes/9027905995) Microtomes; parts and accessories, Parts and accessories, Of electrical instruments and apparatus, Other, Other, Other. Duty (MFN): free
- [9027.90.64.00](https://border.bot/countries/united-states/hs-codes/9027906400) 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. Duty (MFN): free
- [9027.90.68.00](https://border.bot/countries/united-states/hs-codes/9027906800) Microtomes; parts and accessories, Parts and accessories, Other, Of optical instruments and apparatus, Other. Duty (MFN): free
- [9027.90.84.00](https://border.bot/countries/united-states/hs-codes/9027908400) 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. Duty (MFN): free
- [9027.90.88.00](https://border.bot/countries/united-states/hs-codes/9027908800) Microtomes; parts and accessories, Parts and accessories, Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 9027.90 yet.

- [The Harmonized System text for 9027.90](https://border.bot/hs-codes/902790)

- Previous subheading: [9027.89](https://border.bot/countries/united-states/hs-codes/902789) Other
- Next subheading: [9028.10](https://border.bot/countries/united-states/hs-codes/902810) Gas, liquid or electricity supply or production meters, including calibrating meters thereof; parts and accessories thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 9027.90?

The United States tariff splits HS 9027.90 (microtomes; parts and accessories) into 14 national lines: 9027.90.20.00 (microtomes), 9027.90.45.00 (printed circuit assemblies for the goods of subheading 9027.81 or 9027.89), 9027.90.54.00 (of electrophoresis instruments not incorporating an optical or other measuring device), 9027.90.56.25 (of articles of subheading 9027.20.50) and 10 others.

### What is the duty on HS 9027.90 in the United States?

Every United States line under 9027.90 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/902790.json