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%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include NIST-traceable calibration certificates
• Declare as 'manufacturing test equipment' for potential duty relief
• Specify test voltage/current parameters