Company lists · Data refreshed September 2026

Top 25 Industrial hygiene testing companies worldwide

Name: Industrial hygiene testing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,785 companies tracked

RevenueBase identified 2,785 industrial hygiene testing companies worldwide as of September 2026 and tracks 46,593 professional contacts across them, including 14,041 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers industrial hygiene testing companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for industrial hygiene testing companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

2,785Companies

46,593Contacts tracked

14,041Verified emails

0Mobile numbers

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The 25 largest industrial hygiene testing companies worldwide

Ranked by team size

Top 25 of 2,785 industrial hygiene testing companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial hygiene testing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ALS	Strong evidence	Bowen Hills, AustraliaHQ checked Sep 17, 2026	10001+	9,234 contacts →
	Strong evidence “A global leader in testing, ALS provides comprehensive testing solutions to clients in a wide range of industries around the world.” Source: RevenueBase Database · checked Sep 17, 2026
2	Pace Analytical Services	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,228 contacts →
	Indirect evidence “Pace® Science and Technology Company makes the world a safer, healthier place.” Source: RevenueBase Database · checked Sep 17, 2026
3	Pinchin In Canada	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 17, 2026	1,001-5,000	895 contacts →
	Indirect evidence “Pinchin Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
4	Emsl Analytical, INC	Partial evidence	Cinnaminson, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	719 contacts →
	Partial evidence “As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Source: RevenueBase Database · checked Sep 17, 2026
5	LX Argentina S.A	Strong evidence	Ciudad Autónoma De Buenos Aires, ArgentinaHQ checked Sep 17, 2026	1,001-5,000	484 contacts →
	Strong evidence “We are a company that provides industrial cleaning, maintenance and induatrial hygiene.” Source: RevenueBase Database · checked Sep 17, 2026
6	Labstat International INC	Indirect evidence	Kitchener, ON, CanadaHQ checked Sep 17, 2026	201-500	385 contacts →
	Indirect evidence “As part of Certified Group, Labstat partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes®.” Source: RevenueBase Database · checked Sep 17, 2026
7	Labanalysis	Partial evidence	Casanova Lonati, ItalyHQ checked Sep 17, 2026	1,001-5,000	368 contacts →
	Partial evidence “Laboratories that carry out analysis in different fields: environment, pharmaceutical, food, health and safety, agrochemicals and consumer product testing - Environmental…” Source: RevenueBase Database · checked Sep 17, 2026
8	Enthalpy Analytical	Partial evidence	North Little Rock, AR, United StatesHQ checked Sep 17, 2026	501-1,000	349 contacts →
	Partial evidence “Our laboratory service experts provide clients with precision testing support, innovative scientific approaches, and high-quality data that delivers a sense of certainty.” Source: RevenueBase Database · checked Sep 17, 2026
9	Ceimic	Partial evidence	Sumaré, BrazilHQ checked Sep 17, 2026	201-500	325 contacts →
	Partial evidence “Life Sciences Testing Group” Source: RevenueBase Database · checked Sep 17, 2026
10	Alpha Analytical	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 17, 2026	501-1,000	254 contacts →
	Indirect evidence “Since 1987, Alpha Analytical, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
11	Igienair	Indirect evidence	Achères, FranceHQ checked Sep 17, 2026	501-1,000	237 contacts →
	Indirect evidence “IGIENAIR : Spécialiste dans la maitrise et la surveillance de la Qualité de l'Air Intérieur (QAI)!” Source: RevenueBase Database · checked Sep 17, 2026
12	HSL Compliance	Indirect evidence	Ross On Wye, United KingdomHQ checked Sep 17, 2026	501-1,000	236 contacts →
	Indirect evidence “HSL Compliance are one of the leading companies in the legal compliance market and we are able to offer many specialist services.” Source: RevenueBase Database · checked Sep 17, 2026
13	Iproma	Strong evidence	Castellon, SpainHQ checked Sep 17, 2026	201-500	229 contacts →
	Strong evidence “IPROMA is one of the leading companies in the fields of environmental laboratory analysis, technical advice and industrial hygiene.” Source: RevenueBase Database · checked Sep 17, 2026
14	Tecnologie D'impresa SRL	Indirect evidence	Cabiate, ItalyHQ checked Sep 17, 2026	201-500	226 contacts →
	Indirect evidence “TECNOLOGIE D'IMPRESA opera dal 1985 per fusione di realtà presenti dal 1977 nel campo dell'assistenza, della gestione e della risoluzione di problematiche relative alla…” Source: RevenueBase Database · checked Sep 17, 2026
15	Normec I2 Analytical	Partial evidence	Hertfordshire, United KingdomHQ checked Sep 17, 2026	201-500	218 contacts →
	Partial evidence “Founded in 2003, Normec i2 Analytical is one of Europe's leading environmental testing companies providing its customers a comprehensive range of analytical, monitoring and…” Source: RevenueBase Database · checked Sep 17, 2026
16	August Mack Environmental, INC	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 17, 2026	51-200	210 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
17	Hillmann Consulting, LLC	Partial evidence	Union, NJ, United StatesHQ checked Sep 17, 2026	201-500	209 contacts →
	Partial evidence “Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.” Source: RevenueBase Database · checked Sep 17, 2026
18	RJ LEE Group	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 17, 2026	201-500	194 contacts →
	Partial evidence “RJ Lee Group provides comprehensive laboratory testing and scientific consulting services.” Source: RevenueBase Database · checked Sep 17, 2026
19	Kwaliteit Gasmeting Nederland BV	Indirect evidence	Rotterdam Havens, NetherlandsHQ checked Sep 17, 2026	n/a	178 contacts →
	Indirect evidence “Kwaliteit Gasmeting Nederland BV (KGN) was founded in 2011 to check if containers arriving to the port of Rotterdam contain fumigants/pesticides and -/or production gasses in…” Source: RevenueBase Database · checked Sep 17, 2026
20	Forensic Analytical Consulting Services, INC	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 17, 2026	51-200	172 contacts →
	Indirect evidence “With a staff of over 150 employees in the San Francisco, Sacramento, Los Angeles, San Diego, Modesto, Bakersfield, Fresno, Portland, Chicago, and Grand Rapids offices, Forensic…” Source: RevenueBase Database · checked Sep 17, 2026
21	Environmental Health & Engineering	Indirect evidence	Newton, MA, United StatesHQ checked Sep 17, 2026	51-200	170 contacts →
	Indirect evidence “EH & E delivers integrated environmental, engineering, and health and safety solutions that help businesses and institutions safeguard their assets, improve operations and boost…” Source: RevenueBase Database · checked Sep 17, 2026
22	Previne Engenharia & Gestão DE Riscos	Indirect evidence	Maceió, BrazilHQ checked Sep 17, 2026	201-500	169 contacts →
	Indirect evidence “A Previne é uma empresa 100% brasileira com atuação na área de consultoria em saúde, segurança e meio ambiente (SSMA), higiene ocupacional e gerenciamento de riscos com…” Source: RevenueBase Database · checked Sep 17, 2026
23	Rock Compliance	Indirect evidence	Alcester, United KingdomHQ checked Sep 17, 2026	501-1,000	165 contacts →
	Indirect evidence “Rock Compliance is a progressive company in the Water, Air and Asbestos compliance markets.” Source: RevenueBase Database · checked Sep 17, 2026
24	Smithers	Strong evidence	Wareham, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	155 contacts →
	Strong evidence “Smithers is a leading provider of environmental risk testing to the Agrochemical, Pharmaceutical, and Chemical industries.” Source: RevenueBase Database · checked Sep 17, 2026
25	Cleanair Engineering	Partial evidence	Palatine, IL, United StatesHQ checked Sep 17, 2026	51-200	152 contacts →
	Partial evidence “Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: industrial hygiene testing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names industrial hygiene testing companies.
Partial evidence: Its own public description names part of industrial hygiene testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial hygiene testing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,785 industrial hygiene testing companies worldwide

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Industrial hygiene testing companies worldwide at a glance

As of Sep 17, 2026

30.1%Verified-email coverage

16.7Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,499

11-50

964

51-200

235

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among industrial hygiene testing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 16 countries, largest first: the United States, Brazil, Italy, Canada, the United Kingdom, Argentina, Australia, France, India, Germany and 6 more. Country and city lists for industrial hygiene testing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “industrial hygiene testing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names industrial hygiene testing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among industrial hygiene testing companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 14,041 across the full list. 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 September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Industrial hygiene testing companies by location

16 lists · largest first

Every Industrial hygiene testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names industrial hygiene testing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many industrial hygiene testing companies are there worldwide?

RevenueBase identified 2,785 industrial hygiene testing companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ALS, headquartered in Bowen Hills, tops this list with the largest team on record.

Which country has the most industrial hygiene testing companies?

The United States leads with 1,072 companies, followed by Brazil (305) and Italy (236). Every industrial hygiene testing companies list by country and city is linked on this page.

Which city has the most industrial hygiene testing companies?

Sao Paulo leads with 35 headquartered companies, followed by Lima (22) and Houston (21).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 14,041 verified decision-maker contacts tracked across these 2,785 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.