9027.90.64.00/Optical Encoder Disk for Spectrometer/Japan

Optical Encoder Disk for Spectrometer from Japan

Chrome-on-glass encoder disks with 3600 lines/mm resolution for grating position feedback in scanning spectrophotometers (9027.30). Provides sub-arcsecond wavelength accuracy. Essential optical positioning component under 9027.90.64.00.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Provide line pitch uniformity and chrome thickness metrology reports

• Document compatibility with specific grating drive mechanisms

• Specify environmental tolerances (temperature, humidity) for analytical use