PMS® Particle Counter Service Repair & Calibration

PMS® Particle Counter Repair & Calibration

Our particle counter calibration and service technicians are extensively trained and officially certified on all relevant new software updates to efficiently calibrate your PMS instruments* to our highest standards. Our custom-designed, instrument-specific, software-controlled approach automates critical steps that drive consistency in each calibration. This approach ensures the same calibration result and performance, consistent with the factory calibration, regardless of where the calibration is performed—anywhere in the world. To safeguard the quality of your results, PMS-related entities are the only service organizations globally with official access to the most current calibration software. This allows us to make certain your instruments are always calibrated to the most current standards, while also significantly reducing the risk of variations in your results.

Only Particle Measuring Systems is Direct
in Every Major Market

Service locations


PMS Particle Counter Calibration Services include:

  • Particle counter calibration and verification/validation and adjustments back to factory standards
  • ISO 9001:2015
  • ISO 17025
  • Calibration certificate issued with each instrument
  • Preventative maintenance
  • Technical Support:
  • Software Support:
  • Instrument examination (as found and as left data available)
  • NIST traceable


We offer a broad range of services designed to reduce costly downtime. Please contact us for information regarding the following services:

PMS Particle counter service and calibration

  • On-site particle counter calibration at your facility
  • Dedicated Particle Measuring Systems (PMS) particle counter technician year-round at your facility
  • Service contracts for on-site service and return to factory service

Aerosol particle counters must be calibrated to the exacting standard of ISO 21501-4:2018 which includes measurements to verify and set flow rate, counting efficiency, particle sizing, resolution, signal ratios, and zero count. Each calibration is also completed using NIST-traceable standards, and a certificate of calibration is provided with each calibration.


Additional PMS Service Resources

  • Cleanroom Classification adhering to ISO and GMP industrial standards
  • Cleanroom Monitoring: cleanrooms certified/commissioned and validated to ISO 14644-1, 14644-3, EU Guide, and IEST-RP-CC-0063 practices
  • Comprehensive environmental testing of Unidirectional Airflow devices (LAFs), Microbiological Safety devices, Isolators, Operating Theatres, and more
  • Software Downloads


Key Benefits of Direct PMS Particle Counter Service and support

  • Service Staff are certified to support all revision levels of your PMS products
  • PMS can ensure ISO 17205 certified calibrations for your PMS products
  • Access to the most current software/firmware updates for your PMS products
  • Direct Remote Service Support for your PMS hardware and software issues
  • Dedicated escalation process for resolving unique issues with your PMS products
  • Robust root cause analysis and documentation to support your audit requirements

*Please note that we only calibrate Particle Measuring Systems (PMS) instruments.


Click here for our Operations Manuals


We’re here to help; hear it from our customers…

We had an issue with our liquid particle counter last week and I couldn’t have asked for more from PMS Customer Service. When troubleshooting, they realized this was not an issue they’ve seen before. Rick H, who was on vacation at the time, took the time to accommodate not only the issue at hand, but he worked around our availability. A big thank you goes out to Rick and the entire Customer Service Department. Thanks again for your assistance! – Bret Barron

I’m the Metrology Supervisor here at (confidential). Rob Carter is our Field Service Technician for PMS. Rob has been an excellent service provider since he’s been coming to our site over the last few years. He provides great communication prior to his arrival and daily while on-site. He is very knowledgeable in answering any questions we have and also in calibrating/repairing equipment. He is always on time and works efficiently to service our equipment in a timely manner. It is a pleasure to work with Rob and I look forward to working together for years to come.

– Anthony Bettencourt | St. Supervisor, Metrology