Thermometer Glass Tubing
Specialty unworked borosilicate tubing with precise bore and low thermal expansion for manufacturing mercury-free thermometers and temperature probes. Classified in 7002.32.00.00 as unworked low-expansion glass tubes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when fully assembled into thermometers
Complete thermometers, even with glass tubes visible, classify under finished instruments.
If float glass tubes for construction
Different glass composition without low-expansion specs would fall under float glass products.
If made into glass ampoules or vials
Blown or drawn into containers for packaging classifies under glass bottles/jars.
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Import Tips & Compliance
• Certify RoHS compliance if mercury-free; include bore size specifications in commercial invoice
• Import in cleanroom packaging to maintain suitability for precision instruments
Related Products under HTS 7002.32.00.00
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Unworked solid glass rods made from borosilicate with controlled low thermal expansion (≤5 x 10⁻⁶/K), ideal for stirring rods, thermometer tubes, and scientific instrument components. HTS 7002.32.00.00 covers these as unworked rods of low-expansion glass before any fabrication.
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