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HSChapter 90
U.S. exports of mass spectrometers (HS 902781) totaled $43.8M in July 2026.
Importers of Mass Spectrometers paid $2.1M in duties in July 2026 — an effective duty rate of 10% on $21.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Mass Spectrometers imports of $23.4M in July 2026 ran 15% below the year-to-date monthly average of $27.4M.
Last updated: July 2026 dataMass spectrometers — instruments that ionize chemical species and sort them by mass-to-charge ratio — are among the highest-value analytical instruments in international trade, serving pharmaceutical, environmental, forensic, and semiconductor applications. Under the US schedule, all imports in this heading enter as electrical mass spectrometers (9027810000), reflecting the fact that no commercially significant non-electrical mass spectrometer exists. Germany is the leading US import source, followed by Singapore and the United Kingdom — a geographic concentration that reflects the global dominance of a small number of precision-instrument manufacturers headquartered in those countries. Combination instruments such as LC-MS or GC-MS systems may require a classification determination as to whether the mass spectrometer or the separation component governs.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
267 shipments/mo
An ICP-MS is classified under heading 9027.81 as a mass spectrometer, because the mass spectrometer component — which separates and detects ions by mass-to-charge ratio — is the defining analytical function. The ICP source is the sample introduction and ionization method, not a separate instrument. This classification is consistent with CBP rulings on hyphenated ICP-MS systems.
Germany, Singapore, and the United Kingdom collectively account for the dominant share of US mass spectrometer imports, and the market is further concentrated among a handful of global manufacturers. This means supply disruptions — whether from logistics, export controls, or geopolitical factors — can have outsized impact on laboratory procurement timelines. Buyers in regulated industries (pharma, environmental testing) should factor lead times and service-network geography into sourcing decisions.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9027810000 | Electrical Mass Spectrometers | $23.4M | 9.10% | 91.04% | $2.1M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9027810000 | Electrical Mass Spectrometers | $43.8M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$23.4MYoY · Pro
Exports
$43.8MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
customs district
origin
entry
rate provision · imports
9.0% enters free of duty; the effective duty rate is 9.10%.