High Purity Mercury for Barometers
99.99% pure mercury specifically purified for meteorological barometer filling, under HTS 2805.40.00.00 as elemental mercury. Low vapor pressure formulation reduces health risks during instrument assembly. Supplied with expansion chamber specifications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-filled in complete barometers
Assembled mercury barometers classify as complete thermometers under 9025, not separate mercury.
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Import Tips & Compliance
• Specify barometric instrument end-use on commercial invoice to qualify for potential manufacturing drawback programs
• Vapor pressure test certificates (<0.001 torr at 20°C) required for instrument manufacturer acceptance
Related Products under HTS 2805.40.00.00
Elemental Mercury
Pure elemental mercury (Hg), a dense liquid metal at room temperature, classified under HTS 2805.40.00.00 as mercury in its chemically undefined elemental form. It is used in scientific instruments, dental amalgams, and industrial applications. This heading covers mercury not chemically combined with other elements.
Dental Mercury
Pharmaceutical-grade elemental mercury packaged for dental amalgam production, classified in HTS 2805.40.00.00 as pure mercury. Meets USP standards for medical applications with controlled impurity levels. Supplied in sealed capsules to prevent oxidation.
Laboratory Grade Mercury
ACS reagent grade mercury for analytical chemistry and laboratory thermometers, under HTS 2805.40.00.00 as elemental mercury. Supplied with lot-specific certificates of analysis guaranteeing trace metal purity. Essential for barometers and manometers.
Quicksilver Mercury Flasks
Traditional 75 lb iron flasks containing 99.9% pure quicksilver (mercury), HTS 2805.40.00.00 for elemental mercury. Standard packaging for mining and industrial distribution worldwide. Each flask stamped with purity and weight markings.
Mercury for Neon Sign Electrodes
Elemental mercury dosed for neon lighting electrodes, HTS 2805.40.00.00 as pure mercury. Precise quantities (typically 10-50 mg) for vapor lamp starting and conduction. Packaged in micro-dosing ampoules.
Pharmaceutical Mercury Grade
USP/NF certified mercury for remaining permitted medical applications, classified HTS 2805.40.00.00 as elemental mercury. Ultra-low heavy metal impurities (<1 ppm lead). Supplied with pharmacopeia compliance certificates.