Product classification
HS code for Mercury thermometer: 9025.11
Thermometers and pyrometers, liquid filled, for direct reading, not combined with other instruments.
Classification of mercury thermometer under HS 9025.11
A mercury thermometer is classified under HS code 9025.11. Chapter 90 includes instruments and apparatus for measuring, checking, or medical use. Heading 9025 covers hydrometers, thermometers, pyrometers, barometers, and similar instruments. Subheading 9025.11 is specifically for liquid-filled thermometers designed for direct reading. This includes thermometers where the liquid (mercury) expands into a graduated glass tube. The classification applies regardless of whether the thermometer is for household, industrial, or laboratory use, provided it is not combined with other instruments. The "direct reading" aspect is crucial; it means the temperature is read directly from the scale on the instrument without electronic conversion. While many countries have restricted the sale of mercury thermometers due to environmental concerns, they remain specifically identified in the HS nomenclature under this code. If the thermometer is integrated into a more complex device, such as a thermostat or a meteorological station, it may be classified elsewhere under Chapter 90.
- Covers
- Mercury-in-glass laboratory thermometers
- Mercury-filled industrial thermometers
- Direct-reading mercury clinical thermometers
- Mercury-filled household thermometers
- Standardized mercury reference thermometers
- Also under 9025.11
- Brannan Mercury Thermometer
- Taylor Precision Products Alcohol Thermometer
- Fisherbrand General Purpose Thermometer
- VWR Traceable Thermometer
- Zeal Laboratory Thermometer
Codes often confused with 9025.11
Common mistake. The most common misclassification is 9025.19, which is for thermometers that are not liquid-filled, such as digital or bimetallic thermometers. Another error is 9018.19, which covers electro-diagnostic apparatus; however, even clinical mercury thermometers are generally preferred in 9025.11 unless they are part of a complex medical system. If the thermometer is combined with a hygrometer, it moves to 9025.80.
Top exporters and importers of HS 902511 (the code used for mercury thermometer), 2025
In 2025, the largest exporter of HS 902511 (the code used for mercury thermometer) in UN Comtrade data was China, with 28% of world exports; the largest importer in UN Comtrade data was Germany, with 9.1% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 902511, not only mercury thermometer.
Top exporters 2025 · share of world exports
- 1 China $35M 28% of world exports
- 2 Germany $24M 19% of world exports
- 3 United States $15M 12% of world exports
World total: $125M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $13M 9.1% of world imports
- 2 United States $11M 8.1% of world imports
- 3 Italy $8.3M 6.0% of world imports
World total: $139M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for mercury thermometer
Brazil splits HS 9025.11 into 4 NCM codes. Pick the one that matches your product:
- 9025.11.11Clinical mercury thermometers
- 9025.11.19Mercury-free liquid clinical thermometers
- 9025.11.91Non-clinical liquid thermometers with mercury
- 9025.11.99Mercury-free non-clinical liquid thermometers
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about mercury thermometer
What is the HS code for Mercury thermometer?
The HS code for Mercury thermometer is 902511 (Thermometers and pyrometers; liquid filled, for direct reading, not combined with other instruments). The HS code for a liquid-filled mercury thermometer for direct reading is 9025.11.
How do I classify Mercury thermometer for customs?
Mercury thermometer is classified under HS code 902511 — Thermometers and pyrometers; liquid filled, for direct reading, not combined with other instruments. This is a 6-digit subheading level code.
Does this code include digital thermometers?
No, digital thermometers are not liquid-filled and are classified under HS code 9025.19.
Which countries are the top exporters of mercury thermometer (HS 902511)?
In 2025, the top exporters of HS 902511 (the code used for mercury thermometer) in UN Comtrade data were China ($35M, 28% of world exports), Germany ($24M) and the United States ($15M). World exports came to about $125M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of mercury thermometer (HS 902511)?
In 2025, the top importers of HS 902511 (the code used for mercury thermometer) in UN Comtrade data were Germany ($13M, 9.1% of world imports), the United States ($11M) and Italy ($8.3M). World imports came to about $139M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Mercury thermometer the same in all countries?
The base HS code 902511 for Mercury thermometer is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for mercury thermometer in Brazil?
Brazil splits HS 902511 into 4 NCM codes, so the right one for mercury thermometer depends on the product's details: 9025.11.11 (Clinical mercury thermometers), 9025.11.19 (Mercury-free liquid clinical thermometers), 9025.11.91 (Non-clinical liquid thermometers with mercury), 9025.11.99 (Mercury-free non-clinical liquid thermometers).