9027.90.56.30/Reference Beam Splitter Assembly/Japan

Reference Beam Splitter Assembly from Japan

Calcium fluoride beam splitter with kinematic mount for dual-beam UV-Vis spectrophotometers under 9027.30.40. Maintains reference beam stability for accurate absorbance readings. Precision optical/electrical part under 9027.90.56.30.

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 coating specifications, wavelength range, and alignment tolerances

• Include proof of principal use via instrument service manuals referencing the part

• Declare optical substrate material (CaF2, quartz) accurately for verification