Audit-Quality Calibration for Air Particle Counters

Don't trust your calibration service to just anyone

We're the only service provider with GMP-trained service technicians who use the CoreCAL system and test standards required to perform ISO 21501-4 calibrations1 for MET ONE equipment.

Unless your service engineer uses CoreCAL and the Beckman Coulter 3400STD transfer standard, it’s impossible to complete these mandatory ISO 21501-4 test parameters:

  • Set/update channel threshold voltages
  • Noise test
  • Flow rate calibration
  • Resolution
  • Counting efficiency & accuracy
  • @ 50% & @ 100%
  • Maximum concentration
  • Peak-to-valley
  • Sample time error
  • False count rate

Enjoy service continuity and peace of mind

Choose from 6-month, annual or customized service options—performed according to ISO 21501-4 and ISO 17025 requirements3 using NIST-traceable equipment and particle media.

Your expertly trained Beckman Coulter service engineer will be knowledgeable about quality guidelines enforced by the FDA and ISO/IEC 17025.

Request onsite calibration services (all products, US & Canada): Or call 800-369-0333

If you prefer, you can return your MET ONE instrument to us for calibration. We currently perform calibration/qualification services at five depot locations across North America, and we provide courtesy 2-day return shipping.

  1. MET ONE 3400, 6000 & 7000 Series systems are designed and manufactured to comply with ISO 21501-4. If you own older MET ONE equipment, contact us to learn about upgrading to an ISO 21501-4 compliant counter for improved accuracy and repeatability.
  2. If you opt to use an authorized third party, ensure CoreCAL version 4.5 is used to calibrate your system.
  3. Calibrations performed at our ISO 17025-accredited Loveland, CO depot.