Company lists · Data refreshed September 2026

Top 25 Microbial contamination testing based in the United States

Name: Microbial contamination testing based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 283 companies tracked

RevenueBase identified 283 microbial contamination testing headquartered in the United States as of September 2026 and tracks 11,167 professional contacts across them, including 4,415 with verified work emails. Houston is the largest hub.

This list covers microbial contamination testing headquartered in the United States, 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 20, 2026.

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 20, 2026 86% judged on-target in blind review

283Companies

11,167Contacts tracked

4,415Verified emails

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The 25 largest microbial contamination testing based in the United States

Ranked by team size

Top 25 of 283 microbial contamination testing based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to microbial contamination testing: 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	Pace Analytical Services	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 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 20, 2026
2	Nelson Labs	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 20, 2026	501-1,000	775 contacts →
	Strong evidence “Nelson Labs is a global leader in microbiological and analytical chemistry testing and advisory services for the medical device and pharmaceutical industries.” Source: RevenueBase Database · checked Sep 20, 2026
3	Emsl Analytical, INC	Partial evidence	Cinnaminson, NJ, United StatesHQ checked Sep 20, 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 20, 2026
4	IEH Laboratories And Consulting Group	Partial evidence	Lake Forest Park, WA, United StatesHQ checked Sep 20, 2026	1,001-5,000	651 contacts →
	Partial evidence “IEH is an international lab & consulting services company, offering a comprehensive portfolio of lab testing services and consultation across multiple industries.” Source: RevenueBase Database · checked Sep 20, 2026
5	Microbac Laboratories, INC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 20, 2026	501-1,000	494 contacts →
	Indirect evidence “Companies of all sizes partner with Microbac to test the quality, safety, and performance of their products and operations.” Source: RevenueBase Database · checked Sep 20, 2026
6	Hygiena	Partial evidence	Camarillo, CA, United StatesHQ checked Sep 20, 2026	501-1,000	485 contacts →
	Partial evidence “Hygiena delivers rapid microbial detection, monitoring, and identification solutions to a wide range of industries, including food and beverage, healthcare, hospitality…” Source: RevenueBase Database · checked Sep 20, 2026
7	Food Safety NET Services	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 20, 2026	501-1,000	451 contacts →
	Indirect evidence “As part of Certified Group, Food Safety Net Services (FSNS) and Certified Laboratories partner with customers to deliver innovative scientific solutions and expertise – So The…” Source: RevenueBase Database · checked Sep 20, 2026
8	Microbiologics	Indirect evidence	Saint Cloud, MN, United StatesHQ checked Sep 20, 2026	201-500	337 contacts →
	Indirect evidence “We are the world’s leading experts and go-to collaborators in biological products and services, focused on protecting the health and safety of people around the world.” Source: RevenueBase Database · checked Sep 20, 2026
9	ARL BIO Pharma	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 20, 2026	201-500	286 contacts →
	Strong evidence “ARL Bio Pharma is a contract laboratory that provides analytical and microbiological testing for the pharmaceutical industry.” Source: RevenueBase Database · checked Sep 20, 2026
10	Alpha Analytical	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 20, 2026	501-1,000	254 contacts →
	Indirect evidence “Since 1987, Alpha Analytical, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
11	Deibel Laboratories	Indirect evidence	Niles, IL, United StatesHQ checked Sep 20, 2026	201-500	242 contacts →
	Indirect evidence “Deibel Laboratories started in 1967 by Dr.” Source: RevenueBase Database · checked Sep 20, 2026
12	Midwest Laboratories	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 20, 2026	51-200	182 contacts →
	Indirect evidence “Driving smart decisions has been our passion since 1975, and we continue to do this by recruiting talented individuals in the fields of Chemistry, Biochemistry, Biology…” Source: RevenueBase Database · checked Sep 20, 2026
13	Matrix Sciences	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	175 contacts →
	Indirect evidence “Matrix Sciences partners with the agri-food industry to deliver science-based solutions that support confident decision-making across the supply chain from Cultivation to…” Source: RevenueBase Database · checked Sep 20, 2026
14	Q Laboratories	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 20, 2026	51-200	162 contacts →
	Indirect evidence “Q Laboratories is an FDA/MoCRA registered (#1527260), cGMP/GLP compliant, and ISO/IEC 17025 accredited contract laboratory supporting global brands in delivering safe…” Source: RevenueBase Database · checked Sep 20, 2026
15	Advanced Environmental Laboratories, INC	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 20, 2026	51-200	158 contacts →
	Indirect evidence “Advanced Environmental Laboratories, Inc.(AEL) is a NELAP/TNI and DOD certified, national full-service laboratory firm, headquartered in Jacksonville, Florida, with additional…” Source: RevenueBase Database · checked Sep 20, 2026
16	Pacific Biolabs, INC	Partial evidence	Hercules, CA, United StatesHQ checked Sep 20, 2026	51-200	120 contacts →
	Partial evidence “Pacific BioLabs is the leading West Coast provider of GMP/GLP laboratory testing services supporting Medical Device, Pharmaceutical, and Biotechnology industries.” Source: RevenueBase Database · checked Sep 20, 2026
17	Energy Laboratories, INC	Indirect evidence	Billings, MT, United StatesHQ checked Sep 20, 2026	201-500	113 contacts →
	Indirect evidence “Founded in 1952, Energy Laboratories, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
18	EAGLE	Strong evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	112 contacts →
	Strong evidence “Eagle Analytical is an FDA- and DEA-registered, A2LA ISO 17025-accredited laboratory that provides analytical chemistry, microbiological testing, consulting, and technical…” Source: RevenueBase Database · checked Sep 20, 2026
19	Phoenix Environmental Laboratories, INC	Indirect evidence	Manchester, CT, United StatesHQ checked Sep 20, 2026	51-200	78 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
20	A&b Labs	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	71 contacts →
	Indirect evidence “A&B Environmental Services, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
21	Teklab, INC	Indirect evidence	Collinsville, IL, United StatesHQ checked Sep 20, 2026	201-500	68 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
22	Canyon Labs	Indirect evidence	Bluffdale, UT, United StatesHQ checked Sep 20, 2026	51-200	65 contacts →
	Indirect evidence “Canyon Labs partners with pharmaceutical and medical device companies to support products from development through launch and long-term market maintenance.” Source: RevenueBase Database · checked Sep 20, 2026
23	Stat Analysis Corporation	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	62 contacts →
	Indirect evidence “STAT Analysis Corporation (STAT) is a full-service analytical support laboratory that serves the environmental and industrial hygiene industries.” Source: RevenueBase Database · checked Sep 20, 2026
24	Weck Laboratories, INC	Indirect evidence	City Of Industry, CA, United StatesHQ checked Sep 20, 2026	51-200	61 contacts →
	Indirect evidence “Weck Laboratories Inc.” Source: RevenueBase Database · checked Sep 20, 2026
25	AFL	Indirect evidence	Grand Prairie, TX, United StatesHQ checked Sep 20, 2026	51-200	56 contacts →
	Indirect evidence “AFL provides analytical data for the consumer goods industry, from concept to consumption -working with national, regional, and local clients in the food, pharmaceutical…” Source: RevenueBase Database · checked Sep 20, 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: microbial contamination testing. 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 microbial contamination testing.
Partial evidence: Its own public description names part of microbial contamination testing, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name microbial contamination testing. 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 283 microbial contamination testing based in the United States

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Microbial contamination testing based in the United States at a glance

As of Sep 20, 2026

39.5%Verified-email coverage

39.5Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

104

11-50

112

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 283 companies.

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 microbial contamination testing, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “microbial contamination testing”. 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 microbial contamination testing), 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 microbial contamination testing, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 4,415 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 20, 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.

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 microbial contamination testing, 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 microbial contamination testing are there based in the United States?

RevenueBase identified 283 microbial contamination testing headquartered in the United States 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?

Pace Analytical Services, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most microbial contamination testing?

Houston leads with 7 headquartered companies, followed by Portland (5) and Miami (4).

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 4,415 verified decision-maker contacts tracked across these 283 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 20, 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.