# United States tariff lines under HS 3822.90

> The United States tariff splits HS 3822.90 (diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 3006; certified reference materials) into 1 national line: 3822.90.00.00 (certified reference materials). Every United States line under 3822.90 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/382290
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 38](https://border.bot/countries/united-states/hs-codes/38) / [3822.90](https://border.bot/countries/united-states/hs-codes/382290)

## Key facts

- HS subheading: [3822.90](https://border.bot/hs-codes/382290)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 38: Miscellaneous chemical products

## United States lines under 3822.90

The United States tariff splits HS 3822.90 (diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 3006; certified reference materials) into 1 national line: 3822.90.00.00 (certified reference materials).

Every United States line under 3822.90 is free of general (MFN) duty.

- [3822.90.00.00](https://border.bot/countries/united-states/hs-codes/3822900000) Certified reference materials. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 3822.90 yet.

- [The Harmonized System text for 3822.90](https://border.bot/hs-codes/382290)

- Previous subheading: [3822.19](https://border.bot/countries/united-states/hs-codes/382219) Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 3006; certified reference materials
- Next subheading: [3823.11](https://border.bot/countries/united-states/hs-codes/382311) Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3822.90?

The United States tariff splits HS 3822.90 (diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 3006; certified reference materials) into 1 national line: 3822.90.00.00 (certified reference materials).

### What is the duty on HS 3822.90 in the United States?

Every United States line under 3822.90 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/382290.json