Electrodeionization Water Purification Module
EDI module using electrical current and ion-exchange membranes to continuously deionize water for high-purity applications like pharmaceuticals. Under HTS 8421.21.00.00 for advanced water purification.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for power plant boiler feedwater
Utility industry demineralizers may have specific provisions.
If electrical membrane stacks imported separately
Electrical machines for electroplating/other electrolytic processes.
If with integrated conductivity monitoring
Measuring instruments classification takes precedence.
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Import Tips & Compliance
• Specify resistivity output (e.g
• 18 MΩ·cm) and flow capacity for verification
• Include membrane stack configuration and power requirements
• Certify for ultrapure water standards (ASTM Type I)
Related Products under HTS 8421.21.00.00
Reverse Osmosis Water Purification System
A residential reverse osmosis system that uses a semi-permeable membrane to filter and purify water by removing dissolved solids, bacteria, and contaminants. It falls under HTS 8421.21.00.00 as machinery specifically designed for filtering or purifying water for household or small-scale use.
Commercial Ultraviolet Water Purifier
An industrial UV sterilizer that uses ultraviolet light to disinfect water by inactivating bacteria, viruses, and other pathogens without chemicals. Classified under HTS 8421.21.00.00 for its specific function in water purification processes.
Activated Carbon Water Filter Cartridge System
A multi-stage filtration unit using activated carbon cartridges to remove chlorine, odors, and organic compounds from municipal water supplies. It qualifies under HTS 8421.21.00.00 due to its dedicated water purification design.
Industrial Microfiltration Water Purifier
Membrane-based microfiltration system that removes suspended solids, microorganisms, and particulates from process water in manufacturing facilities. Falls under HTS 8421.21.00.00 for water-specific purification machinery.
Whole House Sediment Water Filter
Large-capacity spin-down sediment filter for residential whole-house systems that removes sand, rust, and debris from well or municipal water. Classified in HTS 8421.21.00.00 as water purifying apparatus.
Portable Backpacking Water Purifier Straw
Personal hollow fiber membrane straw purifier that filters up to 1,000 liters of water from streams, removing 99.9999% bacteria and protozoa. HTS 8421.21.00.00 covers portable water purification devices.