Hair Tension Hygrometer
Mechanical hygrometer using human or synthetic hair tension to indicate relative humidity changes on a dial. Under HTS 9025.80.35.00 as a classic non-recording hygrometer for laboratories and museums. Sensitive to 1-99% RH range.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If includes plastic body classified as part for specific use
Certain plastic parts for Chapter 90 instruments go to 9027.
If hair element considered technical textile
Technical use textiles excluded from Chapter 90 by note 1(a).
If predominantly plastic construction without metrological precision
General plastic manufactures classify by material if not specific instruments.
Not sure which classification is right?
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Import Tips & Compliance
• Specify hair or synthetic filament material in invoices for proper verification
• Test for recording capability before shipment to avoid subheading shift
• Avoid classification as textile article per Chapter 90 exclusion note 1(a)
Related Products under HTS 9025.80.35.00
Digital Hygrometer for Home Use
A compact digital hygrometer that measures relative humidity and temperature in indoor environments like homes and offices. It falls under HTS 9025.80.35.00 as a non-recording hygrometer designed for environmental monitoring without data logging capabilities. The device provides real-time LCD display readings for humidity control.
Psychrometer Sling Type
A traditional sling psychrometer consisting of wet and dry bulb thermometers used to calculate relative humidity by evaporation cooling. Classified under HTS 9025.80.35.00 as a non-recording psychrometer for manual humidity measurement in meteorology and labs. It requires user calculation from temperature differentials.
Thermo-Hygrometer for Greenhouse
A handheld thermo-hygrometer for monitoring humidity and temperature in greenhouses to optimize plant growth conditions. It qualifies for HTS 9025.80.35.00 as a non-recording hygrometer and psychrometer combination for agricultural use. Displays instant readings without storage.
Desktop Humidity Monitor Gauge
A analog desktop hygrometer gauge with needle display for continuous humidity monitoring in living spaces. Falls under HTS 9025.80.35.00 as a non-electronic, non-recording hygrometer using hygroscopic materials. Ideal for cigar humidors and wine cellars.
Portable Psychrometer for HVAC Technicians
Portable psychrometer kit for HVAC professionals to measure humidity in air conditioning systems during service calls. Classified in HTS 9025.80.35.00 for its non-recording wet/dry bulb method of psychrometric calculation. Provides field-accurate dew point data.
Whirling Psychrometer Kit
Hand-cranked whirling psychrometer for rapid wet and dry bulb readings in field meteorology. HTS 9025.80.35.00 covers this non-recording psychrometer for precise humidity assessment. Complete with carrying case and charts.