Parts and accessories
Hydrometers and similar floating instruments, thermometers, pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments; parts and accessories thereof: > Parts and accessories
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 9025.90.06.00
Digital Thermometer Probe Sensor
Replacement probe sensor for digital thermometers used in laboratory and industrial temperature monitoring. It connects directly to the thermometer base for accurate readings up to 500°C. Classified under HTS 9025.90.06.00 as a dedicated accessory for thermometers in heading 9025.
Hydrometer Glass Float Assembly
Precision glass float replacement for liquid density hydrometers used in chemical analysis. Features calibrated stem for accurate specific gravity readings. Falls under HTS 9025.90.06.00 as a core accessory for floating hydrometers in heading 9025.
Barometer Aneroid Capsule Sensor
Sealed aneroid capsule sensor for precision barometers measuring atmospheric pressure. Bellows-style diaphragm calibrated in hPa/mbar units. Part of HTS 9025.90.06.00 for barometer pressure-sensing components.
Floating Thermometer Expansion Chamber
Glass expansion chamber for mercury-in-glass floating thermometers used in viscous liquid temperature measurement. Allows thermal expansion without breakage. Classified under HTS 9025.90.06.00 for floating instrument parts.
Industrial Pyrometer Protective Tube
Ceramic protective tube for immersion pyrometers in molten metal applications up to 1600°C. Shields thermocouple from corrosive environments. Part of HTS 9025.90.06.00 despite ceramic construction due to dedicated pyrometer use.
Thermometer Calibration Test Tube
Precision glass test tube for thermometer calibration baths maintaining 0°C, 25°C, 100°C reference points. Features etched graduation marks. HTS 9025.90.06.00 as thermometer calibration accessory.
Barometer Evacuation Valve Assembly
Precision valve assembly for evacuating and sealing aneroid barometer capsules. Maintains partial vacuum for pressure sensitivity. Classified HTS 9025.90.06.00 as specialized barometer assembly tool.
Recording Hygrometer Chart Drum
Mechanical chart drum accessory for strip-chart recording hygrometers measuring humidity over time. Holds circular paper charts for 7-31 day recording periods. Classified in HTS 9025.90.06.00 as a dedicated recording component for 9025 hygrometers.
Pyrometer Thermocouple Cartridge
High-temperature Type K thermocouple cartridge for industrial pyrometers measuring up to 1300°C. Replaceable cartridge with protective sheath for furnace monitoring. HTS 9025.90.06.00 covers it as pyrometer sensing accessory.
Psychrometer Wet Bulb Thermometer Sleeve
Porous wick sleeve for wet bulb thermometer in sling psychrometers measuring relative humidity via evaporation. Cotton or synthetic mesh maintains constant water film. HTS 9025.90.06.00 as psychrometer-specific accessory.
Digital Hygrometer Humidity Sensor Module
Capacitive humidity sensor module for digital hygrometers with 0-100% RH measurement range. I2C interface for direct hygrometer circuit integration. HTS 9025.90.06.00 as electronic hygrometer sensing component.