Particle Measuring Systems

Particle Measuring Systems partners with companies in sterile and ultraclean manufacturing industries as a complete contamination monitoring solutions provider. Starting with our Advisory Services team, then collecting data with our world-class viable and non viable, fixed and portable, air and liquid particle counters, through to complete validation, data management and reporting.

Visit website


We have the expertise to help you improve yield and meet regulatory requirements including ISO 14644-1:2015 and EU GMP Annex 1 to get your product to market.


Particle Measuring Systems is located at the corporate HQ (above). We also have three manufacturing facilities and offices in 13 countries.

Complete Contamination Control Solutions

Established in 1972, Particle Measuring Systems is a global leader for micro-contamination monitoring equipment improving the performance of clean manufacturing in the Electronics and Pharmaceutical markets. Particle Measuring Systems (PMS) works with regulated and ultra-clean manufacturers to provide complete contamination control for your clean manufacturing areas. We provide gold standard instrumentation, sales, service, calibration and advisory services to customers worldwide.

In the Pharmaceutical industry, we begin by consulting with our expert Advisory Services team to perform a risk assessment on your area. We then provide our world-class non viable and viable air and liquid particle counters, installation, validation and finally, compliant data management and reporting; all from one supplier. The PMS team provides you with the expertise to help you meet regulatory requirements including ISO 14644-1:2015, EU GMP Annex 1 and we have complete 21 CFR Part 11 solutions.

In the Semiconductor and Microelectronics industries Particle Measuring Systems has 50 years of application expertise and experience creating particle monitoring instruments with the leading sensitivity these industries need to improve yield. By continuously counting particles with high-performance laser particle counters when and where products are at risk, we provide the information you need with the highest particle counting sensitivity for chemicals, DI water, and airborne applications.

As a global leader in contamination control and a complete solutions provider, we offer fully integrated and robust monitoring solutions including:

Facility Monitoring Systems (FMS)

Particle Measuring Systems

An FMS with industrial control systems assures process automation and data integration with simplicity of use. Our FMS solutions help you maintain and better understand the data from your clean room environmental monitors. Particle Measuring Systems’ family of FMS processors provide a central hub for a facility monitoring system. The Processor communicates with cleanroom sensors, including particle and microbial monitors, while buffering data and checking tolerances for alarm activation. As a key component of industrial automation architecture, this embedded system offers high reliability as it controls samples and communicates with central software. A complete FMS system includes particle counters, microbial monitors, and various facility EM sensors. Particle Measuring Systems provides you with the equipment, software, installation and industry experts to detect, analyze, and control cleanroom contamination.

Contamination Monitoring Systems for Pharmaceutical Manufacturers

PMS’s equipment is specifically designed and manufactured for pharmaceutical aseptic and clean room environmental monitoring. The units have a robust system architecture that ensures critical data is always available when needed for batch release and reporting. This is achieved using Facility Monitoring Systems with fixed and portable viable and non viable counters for air, liquid and compressed gas. Including worldwide compliant and industry leading data management software.

PMS has modular and standalone solutions for cleanroom environmental contamination monitoring for ISO Grades: 5 (Grade A), ISO 5-6 (Grade B), and ISO 7-8 (Grade C-D) cleanrooms. Additionally, we have broad experience in monitoring applications such as loading, filling, capping, lyophilization, sealing, product transfer, operator functions, material transfer, gowning, compounding and packaging applications.

Particle Measuring Systems

Viable Monitoring Solutions for Pharma & Biopharma Manufacturing

Data from an Environmental Monitoring (EM) program gives you a picture of how well your aseptic and clean areas are maintained. The viable environmental monitoring data is as critical to EM control as the non viable data.

To achieve compliance to regulatory guidance, a microbial / viable monitoring program includes the following components:

  • Active air monitoring (room or enclosure environment)
  • Passive air monitoring (settle plates)
  • Surface monitoring (contact plates and swabs)
  • Personnel monitoring (gloves and garments)
  • Compressed gases
  • Materials and equipment that could compromise product microbiological quality
  • Understanding the cleaning and sanitization process

Industry standards are addressing a lack of microbial monitoring and improving guidelines to ensure better environmental monitoring. Particle Measuring Systems provides solutions developed by industry experts to ensure you are positioned for increased production with fewer excursions and positive audit results.

Particle Measuring Systems

Helping our customers meet regulatory requirements

Particle Measuring Systems (PMS) has been the global leader in cleanroom contamination monitoring for over 45 years. We are the only provider giving you complete monitoring instruments and services to meet pharmaceutical industry requirements. Our microbial monitoring instruments help you effectively meet regulations including ISO 14644, ISO 14698 and worldwide (c)GMP’s such as EU GMP Annex 1. We provide a complete line of remote and portable solutions, including single-use devices, to help you monitor air and surfaces in Grade A/ ISO 5, B/ISO 5-6, and C-D/ISO 7-8 environments, all to worldwide regulatory requirements.

Advisory Services

Particle Measuring Systems’ team of experts is ready and available to support you at every step whether it be non-compliance issues, setting up a new process, GAP Analysis, or training employees. Our Expert Advisory Services offer experienced insight on many topics surrounding:

Cleanroom Contamination Control

  • Design & risk analysis
  • Cleaning and disinfection best practices
  • Process risk assessment
  • Aseptic process simulation
  • Audit management

Providing equipment and services for monitoring your clean areas from one source

  • Remote & portable viable monitoring equipment
  • Remote & portable non viable monitoring equipment
  • Compliant data management software
  • FMS designed specifically for Pharmaceutical industry needs

Contamination control training

  • Quality Risk Management
  • Aseptic Process Simulation
  • Compliance
Particle Measuring Systems

Mission statement

Particle Measuring Systems’ mission statement is to be the differentiated leader for particulate contamination monitoring by improving the performance of clean manufacturers through the applications of superior technology, quality and service.

Our Corporate Values are to always “Be true”, “Own it”, and “Aim high".

Related Content