Alumina Ceramic Retort

High-alumina ceramic retort for laboratory pyrolysis and gas synthesis reactions. Named refractory good in HTS 6903.90.00 for chemical processing. Pure oxide ceramic fired >1600°C.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

More Specific Codes

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Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7017.10Lower: 14.6% vs 35%

If glass lab reaction vessels

Similar function but glass construction shifts to Chapter 70

6909.90.00Higher: 39% vs 35%

If porcelain lab crucibles

Consumer porcelain labware in 6909 vs industrial refractories

Not sure which classification is right?

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Import Tips & Compliance

Lab chemical certification; prove non-glass construction

Avoid Chapter 70 labware classification

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