Czochralski Crystal Puller Centrifuge Module
This is a specialized centrifuge component used in Czochralski crystal pullers for separating impurities during the growth of monocrystalline silicon boules in semiconductor manufacturing. It falls under HTS 8421.99.0180 as a part of centrifuge apparatus dedicated to semiconductor processing equipment. The module ensures ultra-pure crystal formation by centrifugal purification of molten silicon.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as a general machine part not specific to centrifuges
Parts not identifiable as centrifuge-specific may fall under general machinery parts in 8486.
If for testing equipment in semiconductor device validation
If used primarily for testing processed semiconductor devices rather than material growth.
If bulk industrial fluid processing unrelated to semiconductors
Centrifuge parts for general chemical or pharmaceutical processing shift to Chapter 84 heading 8419.
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Import Tips & Compliance
• Verify the part is exclusively for semiconductor crystal growth equipment to qualify under statistical note provisions
• Provide detailed engineering specs and end-use certificates to avoid misclassification as general centrifuge parts
Related Products under HTS 8421.99.01.80
Float Zone Crystal Grinder Coolant Purifier
This purifying apparatus purifies coolant fluids for crystal grinders that shape semiconductor boules to precise diameters in wafer manufacturing. It qualifies for HTS 8421.99.0180 as a parts for purifying machinery dedicated to semiconductor material processing equipment. Maintains coolant purity to avoid crystal contamination.
Crystal Boule Slicing Saw Coolant Filter Module
Modular filter for coolant in wafer slicing saws cutting monocrystalline boules into semiconductor wafers per statistical note (a)(ii)(B). Under HTS 8421.99.0180 as liquid filtering parts for semiconductor processing. Captures diamond grit and silicon particles.
Semiconductor Wafer Slurry Filtration Housing
A filtration apparatus part designed for purifying abrasive slurries used in wafer slicing saws during semiconductor wafer preparation from crystal boules. Classified under HTS 8421.99.0180 as a filtering machinery part for liquids in semiconductor processing. It removes contaminants to prevent defects in sliced wafers.
Gallium Arsenide Wafer Lapping Filter Assembly
Filter part for lapping machines that flatten semiconductor wafers sliced from GaAs boules, ensuring surface flatness for fabrication. Falls under HTS 8421.99.0180 per statistical notes for wafer preparation equipment (a)(ii)(C). Removes lapping debris for defect-free wafers.
Silicon Boule Float Zone Centrifugal Separator
Centrifugal separator part for float zone crystal growers producing high-purity silicon boules for wafer slicing in semiconductors. Classified in HTS 8421.99.0180 as centrifuge parts for semiconductor material growth per statistical note (a)(i). Achieves zone refining via centrifugation.
Wafer Polishing Slurry Gas Purifier Cartridge
Cartridge part for purifying nitrogen gas used in slurry delivery systems for semiconductor wafer polishers achieving flatness tolerances. HTS 8421.99.0180 applies as purifying apparatus parts for gases in wafer prep equipment (a)(ii)(C). Prevents oxidation during polishing.