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.

Particle Measuring Systems (PMS) sets the standard for cleanroom and clean manufacturing environmental and contamination monitoring and control. 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.

Acquired by Spectris in 1996, Particle Measuring Systems is one of 13 operating companies focused on providing productive and enhancing instrumentation and controls.
Spectris is a leading supplier of productivity-enhancing instrumentation and controls. The Company’s products and technologies help customers to improve product quality and performance, improve core manufacturing processes, reduce downtime and wastage and reduce time to market. Its global customer base spans a diverse range of end user markets. Spectris operates across four business segments which reflect the applications and industries it serves: Materials Analysis, Test and Measurement, In-line Instrumentation and Industrial Controls. Headquartered in Egham, Surrey, United Kingdom, the Company employs approximately 8,300 people, with offices in more than 30 countries.