Company lists · Data refreshed October 2026

Top 25 Controlled environment manufacturers based in the United States

RevenueBase identified 141 company matches for controlled environment manufacturers associated with the United States as of October 2026 and tracks 3,998 professional contacts across them, including 1,064 with verified work emails. Grand Rapids is the largest hub.

This list covers company matches for controlled environment manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 10, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 10, 2026 How this list was built
141Companies
3,998Contacts tracked
1,064Verified emails
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The 25 largest controlled environment manufacturers based in the United States

Ranked by team size
Top 25 of 141 company matches for controlled environment manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchStatesville, NC, United StatesHQ recorded Oct 10, 2026501-1,000440 contacts →

Exact match

“Kewaunee Scientific Corporation, founded in 1906, carries a lasting legacy of design, engineering, and manufacturing excellence.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2Exact matchMontgomeryville, PA, United StatesHQ recorded Oct 10, 2026201-500204 contacts →

Exact match

“The leader in Modular Cleanroom Systems AES is the leader in design, construction, and manufacture of modular cleanroom systems and custom cleanroom equipment for life science and…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3Exact matchHolland, MI, United StatesHQ recorded Oct 10, 2026201-500165 contacts →

Exact match

“For more than 55 years, Thermotron has provided quality environmental test equipment.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4Exact matchHudsonville, MI, United StatesHQ recorded Oct 10, 202651-200158 contacts →

Exact match

“ESPEC North America builds quality test chambers in the United States as part of the ESPEC Group, which is the largest organizations solely dedicated to the manufacture of…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5Exact matchOrmond Beach, FL, United StatesHQ recorded Oct 10, 202651-200135 contacts →

Exact match

“Germfree provides controlled aseptic environments as well as primary and secondary containment to serve the rigorous demands of our clients.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6Exact matchSanford, ME, United StatesHQ recorded Oct 10, 202651-200128 contacts →

Exact match

“For more than 60 years, Baker has helped advance science, discovery and clinical care by pioneering innovative solutions for air containment, contamination control and controlled…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7Exact matchFullerton, CA, United StatesHQ recorded Oct 10, 2026201-500113 contacts →

Exact match

“Terra Universal is the global leader of Critical Environment Solutions®.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8Exact matchNew Columbia, PA, United StatesHQ recorded Oct 10, 202651-200108 contacts →

Exact match

“Thermal Product Solutions (TPS) designs and manufactures industrial and laboratory ovens and furnaces, and environmental temperature cycling and stability test chambers.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9Exact matchFort Washington, PA, United StatesHQ recorded Oct 10, 2026501-1,00094 contacts →

Exact match

“CleanSpace – Concept Through Commercialization At CleanSpace, we don’t just build cleanrooms-we deliver operational readiness.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10Exact matchRaleigh, NC, United StatesHQ recorded Oct 10, 202651-20091 contacts →

Exact match

“Founded in 1972, Environmental Specialties designs, manufactures, installs and services a diverse line of controlled environmental chambers that maintain precise conditions for a…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11Exact matchCollege Station, TX, United StatesHQ recorded Oct 10, 202651-20088 contacts →

Exact match

“G-CON Manufacturing, Inc.’s prefabricated, turnkey cleanroom systems represent a significant transition to forward thinking in pharmaceutical and biopharmaceutical processing.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12Exact matchRichmond, VA, United StatesHQ recorded Oct 10, 202651-20085 contacts →

Exact match

“AdvanceTEC is the leader in cleanroom design, construction, off-site prefabrication, and modularization.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13Exact matchSt. Louis, MO, United StatesHQ recorded Oct 10, 202651-20052 contacts →

Exact match

“Founded in 2003, Darwin Chambers Company has been manufacturing, designing, and installing controlled environmental chambers for over a decade.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14Exact matchPerry, IA, United StatesHQ recorded Oct 10, 202651-20052 contacts →

Exact match

“Percival Scientific engineers environmental growth chambers for the superior control of temperature, humidity and lighting for universities, colleges, government institutions and…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15Exact matchCanton, MA, United StatesHQ recorded Oct 10, 202611-5051 contacts →

Exact match

“APA is the leading provider of HVAC solutions for critical environments in greater New England.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16Exact matchPortland, OR, United StatesHQ recorded Oct 10, 202611-5037 contacts →

Exact match

“SLD Technology, Inc.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17Exact matchMinneapolis, MN, United StatesHQ recorded Oct 10, 202611-5035 contacts →

Exact match

“Clean Air Products, established in 1969, designs and manufactures standard, modified-standard and custom cleanroom systems, equipment and components for a broad range of…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18Exact matchNorth Syracuse, NY, United StatesHQ recorded Oct 10, 202651-20032 contacts →

Exact match

“Air Innovations is a world leader in specialty environmental control systems – but we do things a little differently than most companies.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19Exact matchHolland, MI, United StatesHQ recorded Oct 10, 202651-20029 contacts →

Exact match

“Founded in 1972, Russells Technical Products is a global supplier of Environmental Test Chambers and Systems.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20Exact matchTustin, CA, United StatesHQ recorded Oct 10, 202611-5028 contacts →

Exact match

“The Leader in Innovative Cleanroom Solutions Since 1990, Clean Rooms West has designed, built and installed thousands of cleanrooms for clients in diverse industries.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21Exact matchBlack Mountain, NC, United StatesHQ recorded Oct 10, 202611-5028 contacts →

Exact match

“Parameter Generation & Control is an internationally respected manufacturer of precise stability storage products.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22Exact matchLas Vegas, NV, United StatesHQ recorded Oct 10, 202651-20021 contacts →

Exact match

“Since its founding, Q Corporation has built its reputation as a preferred manufacturer of custom environmental testing and conditioning systems.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23Exact matchSan Diego, CA, United StatesHQ recorded Oct 10, 202611-5017 contacts →

Exact match

“Newmatic Engineering has specialized exclusively in precision airflow control for laboratories, vivariums, hospitals, and cleanroom environments since For more than +25 years, we…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24Exact matchGrand Rapids, MI, United StatesHQ recorded Oct 10, 202611-5016 contacts →

Exact match

“Clean Rooms International exists to be a conduit to human innovation – creating environments that enable, safeguard, and inspire work that moves the world forward.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25Exact matchOrange, CA, United StatesHQ recorded Oct 10, 202611-5016 contacts →

Exact match

“Cleatech LLC manufactures Laboratory and Cleanroom Products.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase

Showing 25 of 141 controlled environment manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 1,064 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Controlled environment manufacturers based in the United States at a glance

As of Oct 10, 2026
26.6%Verified-email coverage
28.4Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · Grand Rapids
Oct 10, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
62
51-200
27
201-500
10
501-1,000
2
1,001-5,000
3

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 141 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “controlled environment manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,064 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 10, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “controlled environment manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many controlled environment manufacturers are there based in the United States?

RevenueBase identified 141 company matches for controlled environment manufacturers associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kewaunee Scientific Corp tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most controlled environment manufacturers?

Grand Rapids leads with 4 company records, followed by Houston (4) and Canton (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,064 professional contacts with verified work emails tracked across these 141 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 10, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.