Mass Spectrometer Vacuum Gauge Calibration Standard from China
Precision calibration artifact specifically designed for verifying ionization vacuum gauges in mass spectrometers admitted under 9810.00.60. Provides traceable standards from 10^-9 to 10^-3 Torr range. Essential for maintaining instrument vacuum system integrity in proteomics research.
Duty Rate — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include mass spectrometer specifications showing vacuum requirements
• Provide NIST traceability certification for calibration standards
• Document research protocols requiring instrument verification