Heading 9025

Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments; parts and accessories thereof

14 declarable lines

Heading 9025 covers instruments that measure temperature, atmospheric pressure, humidity or liquid density: thermometers, pyrometers, barometers, hygrometers, psychrometers, hydrometers and recording versions of these, plus their parts and accessories. The heading splits first between thermometers and pyrometers not combined with other instruments (9025.11 for liquid-filled direct-reading types, 9025.19 for all others) and all other instruments (9025.80), with parts and accessories in 9025.90. Most lines in the heading are free of duty; the few dutiable lines are in 9025.80.

Products in this heading

Glass clinical thermometer with mercury or spirit column
Digital infrared forehead thermometer
Wall-mounted aneroid barometer
Non-recording hair or electronic hygrometer for room humidity
Optical pyrometer for measuring kiln or furnace temperature
Recording thermograph or hygrograph
Hydrometer for checking battery acid or antifreeze density
Replacement probe or casing sold as a part of a thermometer

How to choose the right subheading

Decide whether the article is a thermometer or pyrometer, any other instrument of the heading, or a part or accessory.
For thermometers and pyrometers, check whether the item is combined with another instrument; if it is, it leaves 9025.11 and 9025.19.
For liquid-filled direct-reading thermometers, check whether the use is clinical (9025.11.20.00) or other (9025.11.40.00).
For non-liquid thermometers and pyrometers, check for pyrometer, clinical and infrared thermometer categories in 9025.19.
For other instruments, check whether the item is electrical, a barometer, a hydrometer, a hygrometer or psychrometer, or a recording instrument before using the residual lines.

Often confused with

Pressure gauge or manometer
Measuring pressure of a liquid or gas is covered by heading 9026, not by the barometer lines of 9025.
Heading 9026
Thermostat or automatic temperature controller
Instruments that automatically regulate a variable fall in 9032; 9025 covers measuring instruments only.
Heading 9032
Weather station anemometer or rain gauge
Meteorological instruments other than barometers and hygrometers are classified in heading 9015.
Heading 9015
Blood pressure monitor or other electro-medical diagnostic apparatus
Medical instruments of heading 9018 are excluded even when they display a temperature reading.
Heading 9018
Gas or smoke analysis apparatus
Instruments for physical or chemical analysis belong to heading 9027.
Heading 9027

Frequently asked questions

What is the HTS code for a digital infrared thermometer?

A non-clinical infrared thermometer falls in 9025.19.80.60, general (MFN) Free. Clinical infrared thermometers of a kind described in statistical note 2 go in 9025.19.80.10, also general (MFN) Free.

What is the duty on a liquid-filled clinical thermometer?

Liquid-filled direct-reading clinical thermometers are classified in 9025.11.20.00 at a general (MFN) rate of Free. Liquid-filled direct-reading thermometers for other uses go in 9025.11.40.00, also Free.

How do I classify a non-recording hygrometer?

A hygrometer or psychrometer that does not record is classified in 9025.80.35.00, general (MFN) 1.4%. If the device records readings continuously, it moves to 9025.80.40.00, general (MFN) 1%.

Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.