Why does the rate differ by country for the same HTS code?

The Column 1 rate is the same for every origin with normal trade relations. Trade-remedy duties under Sections 232, 301 and 338 are imposed by origin, by product, or by both, so two shipments of the same article from different countries can carry very different totals.

Is this the rate I will actually pay?

It is the rate that applies to this classification and origin on the date shown. The duty owed on a specific entry also depends on the 10-digit statistical suffix, declared content where a duty is content-based, preference eligibility, and any AD/CVD order in scope.

HTS 3822

Heading 3822 covers 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. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 3822.11.00.00, the first line under this heading. Its Column 1 rate is Free. On top of that, the ad valorem total depends on origin: China carries 12.50% and United Kingdom carries 10.00%.

Chapter 38 · Verified 2026-08-31
HTS 2026HTSRev17

8 statistical lines under this heading · 1 distinct Column 1 rate · highest ad valorem total 12.50% from China · lowest 10.00% from United Kingdom

Origin	Ad valorem layers	Layers	Reported under
China CHN	12.50%	mfn + s301	9903.05.31
Vietnam VNM	12.50%	mfn + s301	9903.05.84
Japan JPN	12.50%	s301	9903.05.49
South Korea KOR	12.50%	s301	9903.05.71
Thailand THA	12.50%	mfn + s301	9903.05.77
Brazil BRA	12.50%	mfn + s301	9903.05.27
Mexico MEX	10.00%	mfn + s301	9903.05.55
Canada CAN	10.00%	mfn + s301	9903.05.29
India IND	10.00%	mfn + s301	9903.05.44
Germany DEU	10.00%	s301	9903.05.39
Italy ITA	10.00%	s301	9903.05.39
United Kingdom GBR	10.00%	mfn + s301	9903.05.81

Table 1Rate by country of origin for 3822.11.00.00, resolved 2026-08-31. The first statistical line under 3822; other lines may carry different Column 1 rates.

Code	Description	Column 1	Special	Units
3822.11.00.00	For malaria	Free	—	kg
3822.12.00.00	For Zika and other diseases transmitted by mosquitoes of the genus Aedes	Free	—	kg
3822.13.00.00	For blood-grouping	Free	—	kg
3822.19.00.10	Containing methyl chloroform (1,1,1-trichloroethane) or carbon tetrachloride	inherited	—	kg
3822.19.00.30	Other	inherited	—	kg
3822.19.00.40	Containing methyl chloroform (1,1,1-trichloroethane) or carbon tetrachloride	inherited	—	kg
3822.19.00.80	Other	inherited	—	kg
3822.90.00.00	Certified reference materials	Free	—	kg

Table 2Statistical suffixes under 3822. Duty is assessed at the 10-digit level; the Column 1 rate is stated at the subheading and inherited below it.

Programme	Rate as published	Contribution	Reported under	In force from
Column 1 General (MFN)	Free	0.00%	—	not established
Source: USITC, Harmonized Tariff Schedule of the United States, 2026 HTS Revision 17, published 2026-08-01. Verified 2026-08-31.
Section 301	The duty provided in the applicable subheading + 12.5%	12.50%	9903.05.31	2026-07-24
Source: USTR, Notice of Actions in Section 301 Investigations of Various Economies (FR Doc. 2026-15181), published 2026-07-28. Verified 2026-08-31.

Table 3Duty stack for 3822.11.00.00 from China, resolved 2026-08-31.

Common questions

What is the duty rate for HTS 3822?: Heading 3822 covers 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. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 3822.11.00.00, the first line under this heading. Its Column 1 rate is Free. On top of that, the ad valorem total depends on origin: China carries 12.50% and United Kingdom carries 10.00%.
Why does the rate differ by country for the same HTS code?: The Column 1 rate is the same for every origin with normal trade relations. Trade-remedy duties under Sections 232, 301 and 338 are imposed by origin, by product, or by both, so two shipments of the same article from different countries can carry very different totals.
Is this the rate I will actually pay?: It is the rate that applies to this classification and origin on the date shown. The duty owed on a specific entry also depends on the 10-digit statistical suffix, declared content where a duty is content-based, preference eligibility, and any AD/CVD order in scope.