Particle Measuring Systems (PMS) sets the standard for cleanroom contamination monitoring. With more than 60 patents, we create the technology that enables you to make fact-based decisions, improve 
process yield and comply with changing regulatory requirements.

We understand the challenges our customers face, which is why we
actively remain up to date with industry, trade, and technology changes.

With more than 450 employees, over 35 distributors, and local sales
and services in more than 50 countries, we’re local everywhere.

History - Laser Particle Counters

Particle Measuring Systems is the largest particle counter manufacturer in the world. How did we accomplish this? Simple – we invented laser particle counters – a system that provides accurate data and results for clean room environments.

Since 1972, we reaffirm our technology leadership position by continually pursuing advanced detection technologies, and regularly releasing new products and adding services that focus on current challenges and future needs of the critical industries we serve.

Acquired by Spectris in 1996, Particle Measuring Systems is one of 13 operating companies focused on providing productive and enhancing instrumentation and controls.

Learn more about our particle counting, microbial monitoring, and molecular contamination control through our Particle College® continuing education program.

Company Culture & Values

Company culture is equally important to the technology our executives and technicians create. Whether we are interacting with our customers, employees or technology, Particle Measuring Systems is committed to eminent, professional, and respectable service.

Our values of restless innovation, empowerment, absolute integrity, customer focus and high performance drive our pursuit of excellence. We are proud to be a part of such a rewarding culture that promotes nothing less than ethical behavior and morals, at all levels and circumstances.

Learn more information about our career opportunities at Particle Measuring Systems.

Mission Statement

Particle Measuring Systems’ mission statement is to be the differentiated leader in micro-contamination monitoring and control by improving the performance of clean manufacturers through the application of superior knowledge, technology, quality, and service.


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