Activated Carbon Gas Adsorber
An industrial adsorber using activated carbon media to remove volatile organic compounds (VOCs) and odors from exhaust gases in manufacturing plants. Classified under HTS 8421.39.0190 as other gas purifying apparatus employing adsorption for air treatment.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If bench-scale laboratory purifying units
Small lab apparatus for gas analysis moves to lab equipment provisions.
If integrated into drying ovens for gases
Combination drying and purifying functions classify under drying machinery.
If for semiconductor wafer processing clean air
Gas purifiers dedicated to semiconductor fabrication fall under machines not elsewhere specified.
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Import Tips & Compliance
• Provide material safety data sheets (MSDS) for carbon media and regeneration specs to comply with environmental import regs
• Document pressure drop and media lifespan; high-capacity units risk reclassification if seen as dryers under 8421.21
Related Products under HTS 8421.39.01.90
HEPA Air Purifier Filter Unit
A high-efficiency particulate air (HEPA) filter unit designed for removing airborne particles, dust, and pollutants from indoor air in residential or commercial spaces. It falls under HTS 8421.39.0190 as other filtering or purifying machinery for gases, specifically for air purification not classified elsewhere in the heading.
Commercial Kitchen Grease Vapor Filter
A baffle-style filter system capturing grease particulates and vapors from cooking exhaust in restaurant hoods to prevent fire hazards and odors. It qualifies under HTS 8421.39.0190 for other gas filtering machinery in food service applications.
HVAC Electrostatic Air Cleaner
An electrostatic precipitator module for HVAC systems that charges and collects fine dust particles from recirculated building air. Falls under HTS 8421.39.0190 as other purifying apparatus for gases using electrostatic filtration.
Odor Control Biofilter Module
A biological filter using microbial beds to degrade odorous gases like H2S in wastewater treatment plants. Classified in HTS 8421.39.0190 for other gas purifying machinery employing biofiltration.
Portable Welding Fume Extractor
A mobile filtration unit with flexible arm capturing and filtering toxic metal fumes from welding operations in workshops. It is covered by HTS 8421.39.0190 as other gas filtering apparatus for industrial safety.
Dust Collector Cartridge Filter
High-performance pleated cartridge filters for baghouse dust collectors removing fine particulates from industrial process gases. Under HTS 8421.39.0190 as other filtering machinery for gases in manufacturing.