Portable Optical Smoke Density Meter
Handheld device using light obscuration to measure smoke density and particulate matter in ambient air or vehicle exhaust. Meets HTS 9027.10.40.00 criteria as optical apparatus for smoke/gas analysis.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If using beta attenuation instead of optical detection
Beta gauge particulate monitors classify under other physical analysis methods.
If permanently installed in automotive test equipment
Fixed installation in machinery may classify as compressor accessory.
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
• Include NIST-traceable calibration certificate for light transmission measurement
• Specify 'optical obscuration method' in commercial invoice to avoid 9026 reclassification
• Avoid declaring as general particulate counter which may fall under different headings
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