HTS 3821.00.00 — rate composition
Base rate and applicable layers for this code, with an embedded calculator.
HTS 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) carries an MFN general rate of 5% on U.S. imports; China-origin entries additionally stack Global Section 301 (CN, 12.5% tier). Example (origin CN · $10,000 · sea formal entry): duties + fees ≈ $1,797.14.Data as of 2026-10-07 (ruleset v0.3.4).
Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells
USITC: 5%
Duty layers
| Layer | Rate | Amount | Basis |
|---|---|---|---|
Base duty (MFN) Active | 5% | $500.00 | HTS Column 1 general rate ↗ |
Global Section 301 (CN, 12.5% tier) In litigation | 12.5% | $1,250.00 | Trade Act 1974 §301 (global forced-labor program; FR 2026-15181 §1(a)(iii)) ↗ |
| Harbor Maintenance Fee (HMF) | 0.125% | $12.50 | 26 U.S.C. §4461 / 19 CFR 24.24 (sea & water shipments only) |
| Merchandise Processing Fee (MPF) | 0.3464% (once per entry, min $34.58 / max $670.86) | $34.64 | 19 U.S.C. §58c, FY2027 (from 2026-10-01) |
Example: origin CN · $10,000 · sea formal entry · date 2026-10-07
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U.S. full regime: MFN + 301 + 232 + MPF/HMF
Selected: Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells · Base 5%
FAQ
What is the U.S. import tariff rate for HTS 3821.00.00?
HTS 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) carries an MFN general rate of 5% on U.S. imports; China-origin entries additionally stack Global Section 301 (CN, 12.5% tier). Example (origin CN · $10,000 · sea formal entry): duties + fees ≈ $1,797.14.Data as of 2026-10-07 (ruleset v0.3.4).
Do MPF/HMF fees apply to HTS 3821.00.00?
Yes. Fees are not duties and are charged per entry: Harbor Maintenance Fee (HMF) 0.125%; Merchandise Processing Fee (MPF) 0.3464% (once per entry, min $34.58 / max $670.86). ≈ $47.14 on the $10,000 formal-entry example; postal shipments ≤$2,500 use informal entry with fixed fees instead.
How does HTS 3821.00.00 differ from an HS code and Schedule B?
All three share the same root: HS is the World Customs Organization's 6-digit international baseline; HTS is the 10-digit U.S. import classification (first 6 digits identical to HS — 3821.00.00 on this page is shown at the 8-digit HTS level); Schedule B is the U.S. export code (first 6 digits match HTS, with Census-specific 8–10 digit suffixes). Use this HTS code for U.S. import duty, and Schedule B when exporting from the U.S. Full comparison: /en/guides/hts-vs-hs-vs-schedule-b
Related codes in Chapter 38 · Miscellaneous chemical products
- 3801.10.50Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures: — Artificial graphite: — Other
- 3801.90.00Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures: — Other
- 3802.10.00Activated carbon; activated natural mineral products; animal black, including spent animal black: — Activated carbon
- 3806.10.00Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums: — Rosin and resin acids
- 3808.92.50Insecticides, rodenticides, fungicides, herbicides, antisprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles (for example, sulfur-treated bands, wicks and candles, and flypapers): — Other: — Fungicides: — Other: — Other: — Other
- 3808.93.50Insecticides, rodenticides, fungicides, herbicides, antisprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles (for example, sulfur-treated bands, wicks and candles, and flypapers): — Other: — Herbicides, anti-sprouting products and plant-growth regulators: — Other: — Other
- 3808.94.50Insecticides, rodenticides, fungicides, herbicides, antisprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles (for example, sulfur-treated bands, wicks and candles, and flypapers): — Other: — Disinfectants: — Other
- 3814.00.50Organic composite solvents and thinners, not elsewhere specified or included; prepared paint or varnish removers: — Other
- 3815.12.00Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: — Supported catalysts: — With precious metal or precious metal compounds as the active substance
- 3816.00.20Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801: — Other
- 3818.00.00Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics
- 3819.00.00Hydraulic brake fluids and other prepared liquids for hydraulic transmission, not containing or containing less than 70 percent by weight of petroleum oils or oils obtained from bituminous minerals
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