HTS heading 3821
Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells — 3 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 3821.00.00 | Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells + Ch. 99 | 5% | — |
| 3821.00.00.10 | Viral transport media + Ch. 99 | 5% (inherited from 3821.00.00) | kg |
| 3821.00.00.90 | Other + Ch. 99 | 5% (inherited from 3821.00.00) | kg |
2 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.
Additional duties may apply
3 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.