DUV Mask Metrology Station
A deep ultraviolet metrology station used to measure chrome patterns, quartz thickness, and defectivity on DUV photomasks in semiconductor fabs. It is automated for high-volume inspection and relies on optical measurement techniques. This places it under tariff item 9031.49.90 as an other optical measuring or checking instrument.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the station is a coordinate measuring machine
Coordinate measuring machines are specifically listed in a separate tariff item within the same subheading.
If the instrument measures non-optical properties
Non-optical measuring instruments fall under other headings in Chapter 90.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the metrology station is described as an optical measuring instrument on the customs invoice to support classification under 9031.49.90
• Verify whether the equipment qualifies for duty relief under the Customs Tariff's machinery remissions if used in semiconductor manufacturing
• Keep records of the technical specifications in case CBSA requests verification of the optical measurement function
Related Products under Tariff item 9031.49.90
Autocollimator Optical Alignment System
The Autocollimator Optical Alignment System is a precision instrument measuring small angular deviations for machine tool alignment and optical testing. It is an electronic autocollimator used in metrology laboratories, fitting under tariff item 9031.49.90 as an 'Other' optical measuring instrument.
Chromatic Confocal Sensor
The Chromatic Confocal Sensor is a non-contact optical sensor using chromatic aberration for high-speed surface profiling and thickness measurement. It is an advanced optical measuring technology under tariff item 9031.49.90 for inline production monitoring.
Confocal Laser Scanning Gauge
The Confocal Laser Scanning Gauge is a point sensor using confocal laser scanning for precise distance and thickness measurement in production lines. It is an industrial optical measuring instrument under tariff item 9031.49.90 for automated quality control.
Conoscopic Holography Sensor
The Conoscopic Holography Sensor is a compact optical sensor using conoscopic holography for 3D surface profiling and vibration analysis. It is an advanced optical measuring instrument under tariff item 9031.49.90 for R&D and production metrology applications.
Digital Holographic Microscope
The Digital Holographic Microscope combines digital holography with microscopy for 3D quantitative imaging and surface metrology. It falls under tariff item 9031.49.90 when the measurement function predominates over microscopic observation.
EUV Mask Inspector
A specialized inspector for extreme ultraviolet (EUV) lithography masks, detecting phase defects and absorber irregularities critical for advanced semiconductor nodes. It uses actinic wavelength imaging to perform optical inspection. This qualifies as an other optical measuring or checking instrument under tariff item 9031.49.90.