U.S. imports of Parts & Accessories for Compound Optical Microscopes (HS 901190) totaled $12.8M in August 2026, imported from 39 countries.
Importers of Parts & Accessories for Compound Optical Microscopes paid $1.5M in duties in August 2026, an average duty rate of 12.18% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
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899 import shipments a month
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.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9011900000 | Pts & Accessories for Compound Optical Microscopes | $12.7M | 12.18% | 94.74% | $1.5M |
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 | $8.7M |
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.
Subheading 3 of 4 in heading 9011
Subheading 901190 · $12.8M of $51.9M
ImportsExports
Imports
$12.8MYoY · free account
Exports
$8.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $138.4M of Parts & Accessories for Compound Optical Microscopes and exported $92.7M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Japan and Germany together supply 61% of it. China pays 37.2% duty; Germany 9.5%.
customs district
destination
entry
rate provision · imports
4.5% enters free of duty; duty collected equals 12.18% of imports for consumption.