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Particle Measuring Systems

"Without measurement there is no control®"

Subsidiary
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Founded

1972

54 years

Employees

501-1000

Annual Revenue

Not Disclosed

(2026)

Products

1

Company Overview

Founded in 1972 and based in Boulder, Colorado, Particle Measuring Systems (PMS) provides contamination monitoring solutions for cleanrooms and controlled environments, with over 45 years in operation serving industries worldwide.

PMS serves pharmaceutical and life sciences companies as its primary market, along with semiconductor and microelectronics, aerospace and defense, food and beverage, and cosmetics and personal care industries. The company operates as a subsidiary of Spectris plc, a public company, and maintains a global presence with 35+ distributors serving customers in 70+ countries.

The company positions itself as the only provider giving complete monitoring instruments and services to meet pharmaceutical industry requirements. PMS offers a portfolio including airborne particle counters (portable and remote), liquid particle counters, microbial air samplers, gas contamination monitors, molecular contamination monitors, and environmental monitoring software.

PMS is headquartered at 5475 Airport Blvd in Boulder, Colorado, with Andy Cowan serving as President. The company holds over 60 patents and won the ISPE Editor's Choice Award 2021 for its IsoAir Pro Remote Airborne Contamination Monitor.

Pharmaceutical Focus

Particle Measuring Systems positions itself as a global leader in cleanroom contamination monitoring for the pharmaceutical industry, citing over 45 years of specialised experience. The company describes itself as "the only provider giving complete monitoring instruments and services to meet pharmaceutical industry requirements."

PMS offers regulatory compliance expertise spanning EU GMP Annex 1, ISO 14644 cleanroom standards, ISO 21501-4, USP 788, USP 797, and 21 CFR Part 11. The product portfolio is designed to support pharmaceutical cleanroom certification and ongoing environmental monitoring requirements. Customer counts and named pharma customers are undisclosed.

Industries Served

PharmaceuticalsBiotechnologyLife SciencesSemiconductorsFood & BeverageOther
Financial Overview

Particle Measuring Systems operates as a subsidiary of Spectris plc, a publicly traded company. Revenue estimates vary significantly across sources: LeadIQ reports $750M and RocketReach reports $122.1M annually. PMS was acquired by Spectris plc; the acquisition date is undisclosed.

The company has committed to Net Zero by 2030 for Scope 1 and 2 emissions and 100% green energy at all direct offices. Recent M&A activity, funding rounds and profitability metrics are undisclosed.

Products from Particle Measuring Systems

Browse all software products offered by Particle Measuring Systems.

Particle Measuring Systems Environmental Monitoring
Environmental Monitoring

Contamination monitoring instruments and software for pharmaceutical cleanrooms including airborne and liquid particle counters, microbial air samplers, and gas contamination monitors.

FDA Part 11
Products & Solutions

Particle Measuring Systems offers a portfolio of contamination monitoring solutions for cleanrooms and controlled environments. The product line includes airborne particle counters (both portable and remote monitoring systems), liquid particle counters, microbial air samplers, gas contamination monitors, molecular contamination monitors, and environmental monitoring software.

The IsoAir Pro Remote Airborne Contamination Monitor received the ISPE Editor's Choice Award in 2021. Monitoring instruments are combined with advisory services, training through Particle College, equipment repair and calibration, rental options, and GMP cleanroom certification services. The portfolio is designed to support compliance with pharmaceutical regulations including EU GMP Annex 1, ISO 14644-1:2015, 21 CFR Part 11, USP 788, and USP 797. PMS holds over 60 patents.

Partnerships & Technology

PMS distributes through 35+ authorised distributors serving customers in over 70 countries.

Technology platform partnerships, implementation consulting partners, and formal industry affiliations beyond general compliance expertise with standards organisations (ISO, USP, FDA) are undisclosed.

Support & Services

PMS operates Particle College, a training programme covering contamination control principles and best practices for cleanroom operations.

Professional services include advisory services for contamination control strategy, equipment repair and calibration, rental options for temporary monitoring needs, and GMP cleanroom certification services. Support availability hours, geographic coverage, languages supported, and customer success programme structures are undisclosed.

Training
Credibility & Recognition

Particle Measuring Systems has 45+ years of continuous operation in contamination monitoring and holds 60+ patents. The company received the ISPE Editor's Choice Award 2021 for its IsoAir Pro Remote Airborne Contamination Monitor.

PMS is a subsidiary of Spectris plc, a publicly traded company. Andy Cowan serves as President. The company has committed to Net Zero by 2030 for Scope 1 and 2 emissions and operates with 100% green energy at all direct offices. PMS publishes a dedicated ISO Registrations page listing ISO 9001:2015 across its Niwot Colorado HQ, China, Belgium, Denmark, Germany, Ireland, UK, Italy and Switzerland sites, plus ISO/IEC 17025 accreditation at several of them and ISO 14001 and ISO 45001 in Italy. The Boulder HQ has been ISO 9001 certified since 1998 and moved to the 2015 standard in March 2018. ISO 27001 and SOC 2 are not listed there, and there is no Gartner or Forrester recognition.

Market Presence

PMS serves customers in 70+ countries through 35+ authorised distributors, with over 45 years of continuous operation in contamination monitoring.

The company is a subsidiary of Spectris plc, a publicly traded company, and received the ISPE Editor's Choice Award 2021 for the IsoAir Pro Remote Airborne Contamination Monitor. It operates Particle College as an educational initiative in contamination control. Content marketing (whitepapers, blogs, webinars), social media activity, press release frequency, free trial availability, and demo programme accessibility are undisclosed.

Company Details

Headquarters

Boulder, Colorado, United States

Founded

1972 (54 years in business)

Company Size

501-1000 employees

Type

Subsidiary

Owned by Spectris plc

Annual Revenue

Not Disclosed (2026)

Global Reach

70 countries

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