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Thermo Fisher Orion pH Meter from China

Portable pH measurement instrument exported from US for field testing abroad and returned unchanged. Classified as Chapter 90 measuring instrument qualifying for 9801.00.10.90 duty-free reimportation.

Duty Rate — China → United States

12.5%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Include calibration certificates showing identical pre-export and post-return specifications

Document chain of custody during foreign use to prove no unauthorized modifications occurred

File entry under 9801.00.10.90 specifically noting Chapter 90 classification basis