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Search a US HTS code, an ECCN, or words from the official description. Each result is either the import schedule or the Commerce Control List, with the release and the source it came from.

Not legal advice. Tariffkit is a free research tool. It quotes HTS rate text and ECCN control text as published by the official sources linked here. It does not classify an item, does not apply rulings, and does not calculate duty. Verify the cited release with those sources and with counsel before you rely on it.

Searched the Commerce Control List. This query is an ECCN or EAR99.

ECCN

ecfr-15cfr774-supp1-2026-08-28 · effective 2026-08-28

ECCN

3A233

3A233 Mass spectrometers, capable of measuring ions of 230 u or greater and having a resolution of better than 2 parts in 230, and ion sources therefor, excluding items that are subject to the export licensing authority of the Nuclear Regulatory Commission (see 10 CFR part 110).

Category: Category 3—Electronics
Product group: A. “End Items,” “Equipment,” “Accessories,” “Attachments,” “Parts,” “Components,” and “Systems”

Reason for Control

ecfr-15cfr774-supp1-2026-08-28 · effective 2026-08-28

eCFR Commerce Control List (15 CFR 774, Supplement No. 1)www.ecfr.gov
eCFR versioner XML captured at ingestwww.ecfr.gov

Open code page

/eccn/3A233

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