Particle Measuring Systems

Particle Measuring Systems

Provides contamination-control instruments for ultra-clean manufacturing

Overview

Particle Measuring Systems (PMS) provides instruments and expertise to control contamination in ultra-clean manufacturing environments, such as pharmaceutical and semiconductor production. Its products include laser particle counters, particle spectrometers, and comprehensive Facility Monitoring Systems that count and measure airborne particles to monitor cleanrooms and other controlled spaces. The devices collect data on particle size and concentration, perform real-time monitoring, and trigger alarms to help maintain contamination-free conditions. PMS differentiates itself through a long history dating back to 1972, a spaceflight heritage, a broad patent portfolio, and its role as a global provider of established, gold-standard monitoring solutions within a larger productivity-focused group (Spectris). Its goal is to help manufacturers keep clean facilities, improve product quality and yield, and reduce risk by providing reliable, scalable contamination-control tools and expertise.

About Particle Measuring Systems

Simplify's Rating
Why Particle Measuring Systems is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Industrial & Manufacturing

Healthcare

Company Size

501-1,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Boulder, Colorado

Founded

1972

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Simplify's Take

What believers are saying

  • PMS bought EMS in October 2023, strengthening direct service in Ireland and the UK.
  • SEMICON China 2026 highlighted PMS's contamination-monitoring reach across leading fabs.
  • Revelio data shows 649 employees in March 2026, signaling continued hiring and expansion.

What critics are saying

  • KKR completed Spectris acquisition in December 2025, raising post-deal restructuring risk.
  • TSI launched FMS 2.0 and BioTrak roadmap in August 2026, attacking PMS workflows.
  • Semiconductor and pharma customers delay capex, squeezing PMS orders into 2026 buying cycles.

What makes Particle Measuring Systems unique

  • PMS invented laser particle counting in 1972, anchoring contamination metrology leadership.
  • PMS spans air, gas, chemicals, and DI water monitoring across clean manufacturing.
  • PMS claims over 60 active patents and global presence in major markets.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Health Savings Account/Flexible Spending Account

Life Insurance

401(k) Retirement Plan

401(k) Company Match

Paid Vacation

Paid Holidays

Remote Work Options

Hybrid Work Options

Tuition Reimbursement

Company News

Bionow
Feb 2nd, 2024
Particle Measuring Systems, Inc. Announces Acquisition of Environmental Monitoring Services Irl. Limited and EMS Particle Solutions Ltd

Particle Measuring Systems, Inc. has partnered with EMS for almost thirty years as an exclusive sales and service channel for customers in these strategic territories.

P.M. Measuring
Jan 29th, 2024
Data Management for Environmental Monitoring in a Pharmaceutical Manufacturing Facility

Particle Measuring Systems (PMS) has partnered with Novatek who started with environmental monitoring Software in 2003.

Environmental Expert
Dec 22nd, 2023
Aerosol Particle Monitoring Inside of Semiconductor Process Tools

Particle Measuring Systems introduces the Airnet(R) II 201-4 portable aerosol particle counter as a solution to historical constraints in using inline particle counters for monitoring process tools.

Environmental Expert
Nov 29th, 2023
10 Years of BioCapt Single Use Impactor

Particle Measuring Systems has recently announced 10 years of the Biocapt Single Use Microbial Impactor.

BioPharm International
Oct 4th, 2023
Particle Measuring Systems Announce Acquisition of Environmental Monitoring Services Limited and EMS Particle Solutions

Particle Measuring Systems announce acquisition of Environmental Monitoring Services limited and EMS Particle Solutions.

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