HSChapter 90
U.S. imports of parts & accessories for compound optical microscopes (HS 901190) totaled $12.3M in July 2026, traded with 37 countries.
Importers of Parts & Accessories for Compound Optical Microscopes paid $1.3M in duties in July 2026 — an effective duty rate of 12% on $11.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataObjective lenses, eyepieces, mechanical stages, condensers, and other components designed for compound optical microscopes are classified under a single 10-digit line (9011900000), making this a high-value, technically specific parts category. Japan leads US import supply, followed by Germany and Italy — a supplier profile consistent with the global concentration of precision optical component manufacturing in those countries. Correct classification requires demonstrating that the part is designed for use with a compound optical microscope rather than another optical instrument; generic optical components that serve multiple instrument types may classify elsewhere in Chapter 90.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
855 shipments/mo
Objective lenses specifically designed for compound optical microscopes classify under 9011.90. However, lenses designed for other optical instruments — such as cameras, telescopes, or non-optical microscopes — would classify under the parts heading appropriate to that instrument. The key is whether the lens is identifiable by design as suitable solely or principally for a compound optical microscope.
Japan and Germany together account for the majority of US imports in this category, meaning supply disruptions — whether from logistics, currency fluctuation, or geopolitical factors — can have an outsized impact on availability and lead times. Importers of high-precision components such as plan-apochromat objectives or specialized condensers often have limited alternative sourcing options given the tight manufacturing tolerances involved.
Subheading 3 of 4 in heading 9011
Subheading 901190 · $12.3M of $45.4M
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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 |
|---|---|---|---|---|---|
| 9011900000 | Pts & Accessories for Compound Optical Microscopes | $12.3M | 10.94% | 90.85% | $1.3M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9011900000 | Pts & Accessories for Compound Optical Microscopes | $7.0M |
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
$12.3MYoY · Pro
Exports
$7.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Japan and Germany together supply 48% of it.
customs district
destination
entry
rate provision · imports
5.1% enters free of duty; the effective duty rate is 10.94%.