Crystal Boule Grinding Coolant Purifier
Apparatus that filters and purifies coolant liquids used during crystal grinding in semiconductor wafer preparation to maintain surface flatness tolerances. Falls under HTS 8421.29.0065 for other liquid purifying equipment specific to boule processing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for beverages, liquids for food manufacturing
Food-grade liquid purifiers have separate provisions.
If integrated with measuring instruments for flatness
If combined with metrology functions, may classify as measuring/testing apparatus.
Not sure which classification is right?
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Import Tips & Compliance
• Include grinding process flowcharts showing coolant recirculation and purification cycles
• Specify particle removal size (sub-micron) relevant to semiconductor tolerances
• Avoid general industrial coolant filters by emphasizing boule diameter precision specs
Related Products under HTS 8421.29.00.65
Float Zone Crystal Grower
Centrifugal apparatus employing float zone method to purify and grow semiconductor crystals like silicon by melting a narrow zone and progressively moving it along the boule. Classified in HTS 8421.29.0065 for its liquid zone purifying function in semiconductor wafer production.
Gallium Arsenide Crystal Melt Purifier
Filtering system for purifying molten gallium arsenide used in compound semiconductor boule growth via liquid encapsulation Czochralski method. HTS 8421.29.0065 covers this as other apparatus for semiconductor liquid purification.
Crystal Grinder Coolant Centrifuge
Centrifugal purifier for grinding coolants used on crystal boules to precise diameters and flats indicating conductivity type. HTS 8421.29.0065 includes this semiconductor wafer prep equipment.
Silicon Ingot Float Zone Liquid Separator
Centrifuge separator for zone-refined silicon melts that achieves ultra-high purity (>99.9999%) for power semiconductor wafers. Under HTS 8421.29.0065 as semiconductor liquid purifying equipment.
Czochralski Crystal Puller
A specialized centrifuge apparatus used in semiconductor manufacturing to grow monocrystalline silicon boules from molten material via the Czochralski method. It falls under HTS 8421.29.0065 as other filtering or purifying machinery for liquids, specifically for processing high-purity semiconductor melts to produce crystal ingots for wafer slicing.
Semiconductor Wafer Slurry Filtration System
High-precision filtering machinery for purifying chemical slurries used in wafer slicing and polishing during semiconductor production. It removes contaminants from liquid slurries under HTS 8421.29.0065 as other apparatus for liquids in chip fabrication processes.