Wollaston Prism for Polarizing Microscopes from Japan
Birefringent Wollaston prism mounted for interference microscopy to split polarized light into orthogonal beams. HTS 9002.90.20.00 as specialized mounted prism for petrographic microscopes. Creates shear interference patterns for material stress analysis.
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
• Polarization extinction ratio specs critical for classification proof
• Calcite material sourcing documentation avoids synthetic quartz confusion
• Avoid 'polarizer' generic labeling that triggers 9002.20 review