Industrial Buchner Funnel Filter Sheets
Perforated circular filter sheets sized for Buchner funnels (e.g., 90mm diameter) used in vacuum lab filtration. HTS 4823.20.90.00 as other filter paper cut to size/shape. High wet strength for chemical processing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If ceramic-embedded filter composites
Ceramic filter elements classify under chapter 69
If integral to complete filtering equipment
Complete lab filtering apparatus goes to chapter 84 machinery
If kraftliner base exceeding 115g/m² specs
Heavy kraft paper meeting burst strength goes to sack kraft subheadings
Not sure which classification is right?
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Import Tips & Compliance
• Specify vacuum compatibility and chemical resistance; provide perforation pattern details; ensure no metal/plastic components trigger other headings
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