MTL Weighing Chamber

The AQRC Sample Handling Lab serving IMPROVE network has been equipped with a benchtop MTL environmentally controlled weighing chamber that provides compliant environment (Quality Assurance Guidance Document 2.12) for ambient air quality research. Air velocities, temperature, dew point, and airborne particle counts are controlled and below their regulatory thresholds.

MTL Weighing Chamber

View the EPA's Quality Assurance Guidance Document

System specs:

  • System Capacity: up to 600 filters
  • Throughput: up to 30 weighings per hour
  • Balance Compatibility: 1µg resolution balance (Mettler Toledo XP)
  • Weighing Repeatability: calibration standard (< =)
    • 1 µg System
      • Mass Standard: 0.8 µg
      • Filter: 1.2 µg
  • Achievable Net Load Uncertainty (k=2; 95% confidence, ISO “Guide to the Expression of Measurement Uncertainty” (GUM))
    • 1 µg System: 1.5 µg