Particle Measuring Systems (PMS)

5475 Airport Blvd.
Boulder, CO 80301

[email protected]




Particle Measuring Systems (PMS) sets the standard for 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. That’s why we keep up with your changing needs by actively participating in industry, trade and technology groups. Learn how we support training for industry professionals through our Particle College® continuing education program.

With more than 420 employees, over 35 distributors, and local sales and services in more than 70 countries, we’re local everywhere.



How did we get to be the largest particle counter manufacturer in the world? It’s simple. We invented laser-based particle counting.

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

Acquired by Spectris in 1996, PMS is one of 13 operating companies focused on providing productivity enhancing instrumentation and controls.


Our culture is just as important as the technology we create. We’re committed to doing things the right way whether we’re interacting with our customers, employees or technology. Our values of restless innovation, empowerment, absolute integrity, customer focus and high performance drives our pursuit of excellence. We’re proud to produce and reward a culture of ethical behavior at all levels and in all circumstances.

Mission Statement

To be the differentiated leader for contamination monitoring by improving the performance of clean manufacturers through the application of superior technology, quality and services.

Applications & Methods