Laboratory Time Interval Recorder from Mexico
Precision battery-powered timer for laboratory experiments that records exact time intervals between events with data logging capability and clock movement. Used in scientific research for reaction timing and process monitoring. Classified under 9106.90.65.00 as battery-powered interval recording apparatus.
Duty Rate — Mexico → United States
12.3%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include NIST traceability certificates for clock accuracy to support scientific classification
• Document research end-use to distinguish from industrial process control equipment
• Ensure device specs confirm clock/watch movement per Chapter 91 note 3 requirements