Ceramic Mullite Boat for Technical Furnaces
A mullite ceramic boat shaped and fired for holding samples in high-temperature technical furnaces during material testing and sintering. It qualifies for HTS 6909.19.50.95 as 'other technical uses' ceramic ware, made from siliceous clays and oxides. The design ensures stability under thermal cycling.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as unfired 'green' bodies for customer firing
Unfired ceramic shapes are in 6903, excluded from fired products in headings 6904-6914.
If thickness exceeds 3.2 cm and used as unglazed tiles in labs
Thick ceramic tiles fall under 6907 per US note, regardless of technical application.
If when imported as replaceable parts for laboratory drying ovens
Functional parts of lab machinery classify under the apparatus heading 8419, not separate ceramic wares.
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Import Tips & Compliance
• Submit firing process documentation proving temperatures over 800°C to meet Chapter 69 requirements
• Avoid common pitfalls by specifying 'technical use' on invoices, distinguishing from refractory bricks
• Bundle with end-use declarations from importers to support classification away from Chapter 69 exclusions
Related Products under HTS 6909.19.50.95
Porcelain Crucible for Laboratory Use
A high-purity porcelain crucible designed for melting and heating substances in chemical laboratories, fired after shaping to achieve low water absorption and high thermal resistance. It falls under HTS 6909.19.50.95 as ceramic ware specifically for laboratory and chemical uses, distinct from common tableware. The translucent body ensures precise observation during experiments.
Alumina Ceramic Evaporating Dish
A fired alumina-based ceramic dish used in labs for evaporating liquids and recovering precipitates during analytical chemistry processes. Classified under HTS 6909.19.50.95 for its technical laboratory application and high-temperature firing from inorganic nonmetallic materials. Its opaque, durable body withstands corrosive substances.
Zirconia Ceramic Mortar and Pestle Set
A lab-grade zirconia ceramic mortar and pestle fired for grinding and mixing chemicals without contamination. Under HTS 6909.19.50.95 for laboratory chemical uses, featuring high hardness from oxide-based nonmetallic materials. Naturally opaque and low-absorption for precise technical work.
Silicon Carbide Ceramic Filter Crucible
Fired silicon carbide ceramic crucible with integrated filter for separating solids in chemical filtration processes. Fits HTS 6909.19.50.95 as other laboratory/chemical use ware from high-melting-point carbides. Withstands aggressive acids and high temperatures.
Cordierite Ceramic Sagger for Technical Kilns
A cordierite-based ceramic sagger box fired to protect samples in technical kilns during firing cycles. Classified in HTS 6909.19.50.95 for other technical ceramic applications from magnesium silicates. Offers excellent thermal shock resistance.
Steatite Ceramic Lab Wash Basin
Fired steatite ceramic basin for washing lab equipment, resistant to chemicals and stains. Under HTS 6909.19.50.95 as other chemical use ware from talc-based materials. Opaque stoneware-like body meets technical durability standards.