White Light Interferometer
Optical instrument measuring surface form and finish using white light interferometry for sub-micron precision. HTS 9031.49.9000 covers this advanced optical measuring technology used in semiconductor and optics manufacturing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If simpler interference microscopes without automated measurement
Microscopes with basic interference capability stay in 9013; automated measuring classified in 9031.
If specifically for optical flatness measurement
Instruments dedicated to optical flats have specific subheading within 9031.49.
If when functioning primarily as phase shifting interferometer
Certain specialized optical measuring may fall under other optical instruments in 9027.
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Import Tips & Compliance
• Include coherent light source specifications for CBP optical instrument verification
• Provide NIST-traceable calibration data for customs technical review
• Declare HEPA filtration status for cleanroom compatibility documentation
Related Products under HTS 9031.49.90.00
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