Calcium Fluoride Window Mount from Japan
Mounted CaF2 optical window for UV/VIS spectroscopy cells and excimer laser systems. Transparent from deep UV to IR, used where glass absorbs. HTS 9002.90.95.00 as mounted fluoride optical element for analytical apparatus.
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%
Import Tips
• Provide UV transmission certificates proving optical grade material
• Specify instrument models (spectrometers, lasers) in entry docs
• Handle hygroscopic material carefully to prevent surface degradation