UV-DOAS Flue Gas Monitor
Ultraviolet Differential Optical Absorption Spectroscopy system for measuring SO2, NO2, and O3 in power plant flue gases across open paths. HTS 9027.10.40.00 applies to this optical remote sensing apparatus.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If functioning primarily as general UV spectrophotometer
Lack of gas-specific calibration shifts to general optical instruments.
If with integrated industrial process control functions
Measuring instruments with PLC integration may classify under 9031.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide Method 6C/7E performance specifications for EPA validation
• Include optical path length certification in technical documentation
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