Calibration Jig for Ionization Chamber Testing from Japan
Precision test fixture verifying ionization chamber sensitivity during manufacturing. Uses known radiation sources to calibrate smoke detection threshold. HTS 9022.90.70.00 as accessory for ionizing smoke apparatus quality control.
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
• Include NIST-traceable calibration certificates
• Declare as 'manufacturing test equipment' for potential duty relief
• Specify test voltage/current parameters