2844.43.00.21
Americium-241, californium-252, cesium-137, gadolinium-153, idium-192, promethium-147, radium-226, selenium-75, or ytterbium-169
Duty rates
- Special
- —
- from 2844.43.00
- Lower rates under trade agreements and programs, for goods that meet their rules of origin; each symbol names one.
- Column 2
- Free
- from 2844.43.00
- The higher rate for the few countries without normal trade relations with the United States.
- Units
- GBq
- How the quantity is declared.
These are base rates, not what you pay. The country of origin can add extra duties (Sections 301, 232 and others), and customs fees come on top: the calculator adds up what applies to your goods, each with its source. Why the base rate is not enough
Calculate duties for this codeBase columns of the 2026 HTS Revision 22, in force from Oct. 30, 2026 (official source).
Duties by country of origin
What the calculator answers today for goods of this code from each country, with no trade agreement claimed and before entry fees, on the 2026 HTS Revision 22: the total as a share of the customs value, and the duties that make it up.
| Made in | Duty rate | Made up of |
|---|---|---|
| China | 37.5% |
|
| Mexico | 10% |
|
| Vietnam | 12.5% |
|
| Germany | 10% |
|
| India | 10% |
|
Each answer takes the ordinary case of the questions these goods raise: Certified as an automobile part for U.S. production or repair: No; Certified as a medium- or heavy-duty vehicle part for U.S. production or repair: No; Donation exemption claimed: No; Informational materials exemption claimed: No; Pharmaceutical-use exemption claimed: No; Duty-free USMCA entry claimed: No.
An estimate, not a customs decision. Calculate for your goods, with their value, quantity and date of entry.
Official notices
Actions of the President, the USTR or U.S. Customs and Border Protection (CBP) that name this code.
- Jul 23, 2026 · The White House Actions by the United States in the Investigations Under Section 301 of the Trade Act of 1974 of the Acts, Policies, and Practices of 60 Economies Related to the Failure of Each Economy To Impose and Effectively Enforce a Prohibition on the Importation of Goods Produced With Forced Labor
- Jul 20, 2026 · The White House Action by the United States in the Investigation Under Section 301 of the Trade Act of 1974 of Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation
- Feb 20, 2026 · The White House Imposing a Temporary Import Surcharge To Address Fundamental International Payments Problems
- Dec 18, 2025 · USTR Implementing Certain Tariff-Related Elements of the Framework for a United States-Switzerland-Liechtenstein Agreement on Fair, Balanced, and Reciprocal Trade
- Nov 14, 2025 · The White House Modifying the Scope of the Reciprocal Tariffs With Respect to Certain Agricultural Products
- Sep 25, 2025 · USTR Implementing Certain Tariff-Related Elements of the U.S.-EU Framework on an Agreement on Reciprocal, Fair, and Balanced Trade
- Sep 5, 2025 · The White House Modifying the Scope of Reciprocal Tariffs and Establishing Procedures for Implementing Trade and Security Agreements
- Apr 2, 2025 · The White House Regulating Imports With a Reciprocal Tariff To Rectify Trade Practices That Contribute to Large and Persistent Annual United States Goods Trade Deficits
- Sep 18, 2024 · USTR Notice of Modification: China's Acts, Policies and Practices Related to Technology Transfer, Intellectual Property and Innovation
Mentioned in Chapter 99
The parts of Chapter 99, in the 2026 HTS Revision 22, that list HTS 2844.43.00.21, a broader code that includes it, or a narrower code within it.
| U.S. note | Excerpt | Headings that refer to it |
|---|---|---|
| U.S. note 2(aa)(ii) | (ii) As provided in heading 9903.03.03, the additional duty imposed by heading 9903.03.01 shall not apply to articles the product of any country that are classifiable in the following subheadings of the HTSUS: [Compiler's note: List may… | 9903.03.01, 9903.03.03 |
| U.S. note 2(v)(iii)(a) | (a) As provided for in heading 9903.01.32, the additional duties imposed by headings 9903.01.25, 9903.01.35, 9903.01.39, 9903.01.63, 9903.02.01–9903.02.73, 9903.02.79–9903.02.80, 9903.02.82–9903.02.83, and 9903.02.87–9903.02.88 shall not… | 9903.01.25, 9903.01.32, 9903.01.43, 9903.01.44, 9903.01.45, 9903.01.46 and 107 more |
| U.S. note 2(v)(xxiii) | (xxiii) As provided in heading 9903.02.77, the additional duties imposed by headings 9903.02.19 and 9903.02.20 shall not apply to articles the product of the European Union that are not patented in the United States for use in… | 9903.01.25, 9903.01.43, 9903.01.44, 9903.01.45, 9903.01.46, 9903.01.47 and 106 more |
| U.S. note 2(v)(xxv)(d) | (d) As provided in headings 9903.02.86 and 9903.02.91, the additional duties imposed by headings 9903.02.82–9903.02.83 and 9903.02.87–9903.02.88 shall not apply to articles the product of Switzerland or Liechtenstein, respectively, that… | 9903.01.25, 9903.01.43, 9903.01.44, 9903.01.45, 9903.01.46, 9903.01.47 and 107 more |
| U.S. note 31(b) | (b) Heading 9903.91.01 applies to products of China that are classified in the 8-digit subheadings, or described in the 10-digit statistical reporting numbers, enumerated in this subdivision, effective with respect to goods entered for… | 9903.91.01 |
| U.S. note 50(a)(v) | (v) As provided in heading 9903.05.06, the additional duty imposed by heading 9903.05.01 shall not apply to articles the product of Brazil for use in pharmaceutical applications, and that are classifiable in the following provisions of the… | 9903.05.01, 9903.05.06 |
| U.S. note 52(e) | (e) As provided in heading 9903.05.89, the additional duties imposed by headings 9903.05.20–9903.05.84 shall not apply to articles that are for use in pharmaceutical applications and that are classifiable in the following provisions of the… | 9903.05.20, 9903.05.21, 9903.05.22, 9903.05.23, 9903.05.24, 9903.05.25 and 60 more |
Being listed is not owing a duty. A note may list goods that a measure leaves out; whether a heading applies depends on the origin, the date and the product; and the measures on all the goods of a country list no code at all. The calculator says what applies.
In the tariff
- 2844Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products
- Radioactive elements and isotopes and compounds other than those of subheading 2844.10, 2844.20 or 2844.30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues
- 2844.43.00Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compoundsFree
- Other elements, isotopes and compounds
- 2844.43.00.21Americium-241, californium-252, cesium-137, gadolinium-153, idium-192, promethium-147, radium-226, selenium-75, or ytterbium-169