Borosilicate Glass Balls for Laboratory Use
Unworked borosilicate glass spheres designed for melting into labware components like stirrers or valves. Classified in 7002.10.20.00 as other unworked glass balls, retaining chapter note character whether or not they have article-like form.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cut or ground into finished laboratory stirrers
Worked glass in laboratory articles moves to 7017, based on state of completion per chapter notes.
If ceramic composition rather than glass
Ceramic balls for lab use fall in Chapter 69, differentiated by fused silica vs. crystalline structure.
If for microspheres in artificial line packs
Specialty small glass balls for lab column packing are microspheres under 7018.
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Import Tips & Compliance
• Include chemical analysis reports proving borosilicate composition to distinguish from soda-lime and support valuation
• Avoid common error of declaring as 'finished articles' if merely annealed; chapter notes keep them in 7002
• Label shipments clearly as 'unworked balls' to prevent CBP reclassifying as worked glass under 7017 lab glassware
Related Products under HTS 7002.10.20.00
Optical Flint Glass Balls Unworked
Unworked flint glass spheres for precision optics manufacturing. HTS 7002.10.20.00 as other unworked glass balls, prior to grinding into lenses.
Colored Soda Glass Balls for Crafts
Unworked colored soda-lime glass balls for craft fusing and slumping. 7002.10.20.00 covers as other balls, annealing only.
Unworked Soda-Lime Glass Balls
Spherical soda-lime glass balls, unworked except for annealing, used as precursors for manufacturing precision bearings and valves. They fall under HTS 7002.10.20.00 as 'other' glass balls not classified as microspheres of heading 7018, with no further processing beyond basic forming.
Quartz Glass Balls Unworked
Fused quartz glass balls, unworked, for optical and semiconductor applications prior to further processing. HTS 7002.10.20.00 covers these as 'other' balls, including fused silica per tariff schedule definition of glass.
Lead-Free Glass Balls for Decorative Molding
Unworked clear glass balls for hot molding into ornamental beads or sculptures. Falls under 7002.10.20.00 as other unworked balls, distinct from lead crystal requiring 24% PbO.
High-Density Glass Balls for Shot Blasting
Unworked glass balls serving as preforms for abrasive media in shot peening. Classified 7002.10.20.00 as other balls, unworked status preserved under chapter notes.