Membrane Filter Module for Ultrapure Water
Cross-flow membrane modules (microfiltration/ultrafiltration) producing ultrapure water for semiconductor fabrication. HTS 8421.29.00 includes these as other purifying apparatus for liquids, critical for removing submicron particles. Excludes reverse osmosis in some contexts.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for solvent recovery in chip manufacturing
Organic solvent filtration uses oil/petrol filter provisions.
If primarily reverse osmosis membranes
RO and dialysis equipment have dedicated provisions.
If medical/pharma sterile water production
Medical purifying instruments classify under Chapter 90.
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Import Tips & Compliance
• Provide pore size and rejection rate data distinguishing from RO; semiconductor cleanroom certifications required; avoid parts classification by importing complete modules
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