Company lists · Data refreshed November 2026
Top 24 Third party testing companies based in the United States
RevenueBase identified 675 company matches for third party testing companies associated with the United States as of November 2026 and tracks 82,905 professional contacts across them, including 30,397 with verified work emails. Houston is the largest hub.
This list covers company matches for third party testing companies 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 November 6, 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.
The 24 largest third party testing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 13,154 contacts → | ||||
Exact match “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 3,868 contacts → | ||||
Exact match “Acuren (NYSE: TIC) is a leading provider of critical asset integrity services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 3,737 contacts → | ||||
Exact match “The AmSpec Group has been relied upon in the testing, inspection, and certification (TIC) sector for several decades.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 2,731 contacts → | ||||
Exact match “Founded in 1944, NSF is committed to protecting and improving human health and the environment on a global scale.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 2,394 contacts → | ||||
Exact match “NV5 is a provider of technology, conformity assessment, and consulting solutions for public and private sector clients supporting infrastructure, utility, and building assets and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,663 contacts → | ||||
Exact match “Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 961 contacts → | ||||
Exact match “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 818 contacts → | ||||
Exact match “A world player in food safety, quality, and sustainability for more than 50 years, Mérieux NutriSciences is located in 32 countries with more than 140 accredited laboratories, as…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 763 contacts → | ||||
Exact match “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 705 contacts → | ||||
Exact match “Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 683 contacts → | ||||
Exact match “IEH is an international lab & consulting services company, offering a comprehensive portfolio of lab testing services and consultation across multiple industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 498 contacts → | ||||
Exact match “Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 494 contacts → | ||||
Exact match “Hohenstein Group Hohenstein is a family-owned company with more than 80 years of experience in testing, certification and research.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 490 contacts → | ||||
Exact match “SPL is a leading provider of compliance and testing services for Environmental, Energy, and other end markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 458 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 375 contacts → | ||||
Exact match “Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 364 contacts → | ||||
Exact match “Our mission at AET is to work together to build a more certain world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 332 contacts → | ||||
Exact match “Founded in 1987, ATL, A Bureau Veritas Company, is a Scientific Sourcing Solutions Company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 259 contacts → | ||||
Exact match “Setting the Standard for Premier Inspection Services in the Oil & Gas Industry through our Dedication to Tradition / Talent / Technology / Teamwork TJ Inspection provides the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 241 contacts → | ||||
Exact match “Certified Group partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes®.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 238 contacts → | ||||
Exact match “MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 231 contacts → | ||||
Exact match “Industrial Inspection & Analysis® (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 219 contacts → | ||||
Exact match “Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 207 contacts → | ||||
Exact match “Performance Review Institute® (PRI℠) is headquartered in Pittsburgh, Pennsylvania in the USA, with offices in London, UK to serve Europe and in Beijing, China and Aichi, Japan…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “third party testing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 24 of 675 third party testing companies based in the United States
See the full list, filter by size, metro and specialty, and access 30,397 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Third party testing companies based in the United States at a glance
As of Nov 6, 2026Companies by employee count
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 675 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 “third party testing companies” 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 30,397 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 November 6, 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.
Third party testing companies by metro
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 “third party testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many third party testing companies are there based in the United States?
RevenueBase identified 675 company matches for third party testing companies associated with the United States as of November 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?
UL Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most third party testing companies?
Houston leads with 37 company records, followed by Miami (13) and Austin (8).
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 30,397 professional contacts with verified work emails tracked across these 675 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 675 third party testing companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Third party testing companies by geography
- Third party testing companies based in Sao Paulo, Brazil
- Third party testing companies based in Bangalore, India
- Third party testing companies based in Mumbai, India
- Third party testing companies based in Pune, India
- Third party testing companies based in Milan, Italy
- Third party testing companies based in Istanbul, Türkiye
- Third party testing companies based in Dubai, United Arab Emirates
- Third party testing companies based in London, United Kingdom
- Third party testing companies based in Houston, United States
- Third party testing companies based in Argentina
- Third party testing companies based in Australia
- Third party testing companies based in Belgium
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Third party testing companies based in Sao Paulo, Brazil
- Third party testing companies based in Bangalore, India
- Third party testing companies based in Mumbai, India
- Third party testing companies based in Pune, India
- Third party testing companies based in Milan, Italy
- Third party testing companies based in Istanbul, Türkiye
Company intelligence · public preview
Top 24 third party testing companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 675 matching company records for third party testing companies based in the United States, with 82,905 tracked contacts and 30,397 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 24 third party testing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  UL Solutionsul.comHQ: Northbrook, NC, United StatesReported employees: 10001+ | Northbrook, NC, United States | 10001+ | Exact match | 13,154 contacts → |
“A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Acurenacuren.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,868 contacts → |
“Acuren (NYSE: TIC) is a leading provider of critical asset integrity services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Amspec Groupamspecgroup.comHQ: Cranbury, NJ, United StatesReported employees: 5,001-10,000 | Cranbury, NJ, United States | 5,001-10,000 | Exact match | 3,737 contacts → |
“The AmSpec Group has been relied upon in the testing, inspection, and certification (TIC) sector for several decades.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  NSFnsf.orgHQ: Ann Arbor, MI, United StatesReported employees: 1,001-5,000 | Ann Arbor, MI, United States | 1,001-5,000 | Exact match | 2,731 contacts → |
“Founded in 1944, NSF is committed to protecting and improving human health and the environment on a global scale.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Nv5nv5.comHQ: Hollywood, TX, United StatesReported employees: 1,001-5,000 | Hollywood, TX, United States | 1,001-5,000 | Exact match | 2,394 contacts → |
“NV5 is a provider of technology, conformity assessment, and consulting solutions for public and private sector clients supporting infrastructure, utility, and building assets and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Stratosphere Qualitystratospherequality.comHQ: Fishers, IN, United StatesReported employees: 1,001-5,000 | Fishers, IN, United States | 1,001-5,000 | Exact match | 1,663 contacts → |
“Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Applied Technical Services, LLCatslab.comHQ: Marietta, GA, United StatesReported employees: 1,001-5,000 | Marietta, GA, United States | 1,001-5,000 | Exact match | 961 contacts → |
“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Mérieux Nutrisciences - Globalmerieuxnutrisciences.comHQ: Tassin La Demi Lune, IL, United StatesReported employees: 10001+ | Tassin La Demi Lune, IL, United States | 10001+ | Exact match | 818 contacts → |
“A world player in food safety, quality, and sustainability for more than 50 years, Mérieux NutriSciences is located in 32 countries with more than 140 accredited laboratories, as…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  TÜV Rheinland North Americatuv.comHQ: Boxborough, CA, United StatesReported employees: 501-1,000 | Boxborough, CA, United States | 501-1,000 | Exact match | 763 contacts → |
“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  SCS Global Servicesscsglobalservices.comHQ: Emeryville, CA, United StatesReported employees: 201-500 | Emeryville, CA, United States | 201-500 | Exact match | 705 contacts → |
“Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  IEH Laboratories And Consulting Groupiehinc.comHQ: Lake Forest Park, GA, United StatesReported employees: 1,001-5,000 | Lake Forest Park, GA, United States | 1,001-5,000 | Exact match | 683 contacts → |
“IEH is an international lab & consulting services company, offering a comprehensive portfolio of lab testing services and consultation across multiple industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Socotec USsocotec.usHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 498 contacts → |
“Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Hohenstein Grouphohenstein.comHQ: Bönnigheim, IN, United StatesReported employees: 1,001-5,000 | Bönnigheim, IN, United States | 1,001-5,000 | Exact match | 494 contacts → |
“Hohenstein Group Hohenstein is a family-owned company with more than 80 years of experience in testing, certification and research.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  SPLspllabs.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 490 contacts → |
“SPL is a leading provider of compliance and testing services for Environmental, Energy, and other end markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Food Safety NET Servicesfsns.comHQ: San Antonio, OH, United StatesReported employees: 501-1,000 | San Antonio, OH, United States | 501-1,000 | Exact match | 458 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  FST Technical Servicesfsttechnical.comHQ: Chandler, PA, United StatesReported employees: 201-500 | Chandler, PA, United States | 201-500 | Exact match | 375 contacts → |
“Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  AETteamaet.comHQ: St. Paul, MN, United StatesReported employees: 201-500 | St. Paul, MN, United States | 201-500 | Exact match | 364 contacts → |
“Our mission at AET is to work together to build a more certain world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Atl, A Bureau Veritas Companyatlscience.comHQ: Milford, OH, United StatesReported employees: 501-1,000 | Milford, OH, United States | 501-1,000 | Exact match | 332 contacts → |
“Founded in 1987, ATL, A Bureau Veritas Company, is a Scientific Sourcing Solutions Company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  TJ Inspection, INCtjinspection.comHQ: Oklahoma City, TX, United StatesReported employees: 201-500 | Oklahoma City, TX, United States | 201-500 | Exact match | 259 contacts → |
“Setting the Standard for Premier Inspection Services in the Oil & Gas Industry through our Dedication to Tradition / Talent / Technology / Teamwork TJ Inspection provides the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Certified Groupcertifiedgroup.comHQ: Melville, NY, United StatesReported employees: 1,001-5,000 | Melville, NY, United States | 1,001-5,000 | Exact match | 241 contacts → |
“Certified Group partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes®.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  MGA Research Corporationmgaresearch.comHQ: Akron, VA, United StatesReported employees: 201-500 | Akron, VA, United States | 201-500 | Exact match | 238 contacts → |
“MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Industrial Inspection & Analysisindustrial-ia.comHQ: Alpharetta, CA, United StatesReported employees: 501-1,000 | Alpharetta, CA, United States | 501-1,000 | Exact match | 231 contacts → |
“Industrial Inspection & Analysis® (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  PRO QC Internationalproqc.comHQ: Mchenry, IL, United StatesReported employees: 501-1,000 | Mchenry, IL, United States | 501-1,000 | Exact match | 219 contacts → |
“Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  PRI Performance Review Institutep-r-i.orgHQ: Warrendale, PA, United StatesReported employees: 51-200 | Warrendale, PA, United States | 51-200 | Exact match | 207 contacts → |
“Performance Review Institute® (PRI℠) is headquartered in Pittsburgh, Pennsylvania in the USA, with offices in London, UK to serve Europe and in Beijing, China and Aichi, Japan…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 675 company matches
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Third party testing companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
673 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 675 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Third party testing companies by metro
Questions about this company list
What does Exact match mean for third party testing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many third party testing companies did RevenueBase find based in the United States?
The saved snapshot records 675 matching company records, 82,905 tracked contacts and 30,397 verified emails. The public preview displays 24 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Third party testing companies by geography
- Third party testing companies based in Sao Paulo, Brazil
- Third party testing companies based in Bangalore, India
- Third party testing companies based in Mumbai, India
- Third party testing companies based in Pune, India
- Third party testing companies based in Milan, Italy
- Third party testing companies based in Istanbul, Türkiye
- Third party testing companies based in Dubai, United Arab Emirates
- Third party testing companies based in London, United Kingdom
- Third party testing companies based in Houston, United States
- Third party testing companies based in Argentina
- Third party testing companies based in Australia
- Third party testing companies based in Belgium
Cite this list
RevenueBase Data Team. Top 24 third party testing companies based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/third-party-testing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Third party testing companies based in Sao Paulo, Brazil
- Third party testing companies based in Bangalore, India
- Third party testing companies based in Mumbai, India
- Third party testing companies based in Pune, India
- Third party testing companies based in Milan, Italy
- Third party testing companies based in Istanbul, Türkiye
Company intelligence · public preview
Top 24 third party testing companies based in the United States
RevenueBase records 675 matching company records for third party testing companies based in the United States, with 82,905 tracked contacts and 30,397 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 24 third party testing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | UL Solutionsul.com HQ: Northbrook, NC, United StatesReported employees: 10001+ | Northbrook, NC, United States | 10001+ | Exact match | 13,154 contacts → |
“A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Acurenacuren.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 3,868 contacts → |
“Acuren (NYSE: TIC) is a leading provider of critical asset integrity services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Amspec Groupamspecgroup.com HQ: Cranbury, NJ, United StatesReported employees: 5,001-10,000 | Cranbury, NJ, United States | 5,001-10,000 | Exact match | 3,737 contacts → |
“The AmSpec Group has been relied upon in the testing, inspection, and certification (TIC) sector for several decades.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | NSFnsf.org HQ: Ann Arbor, MI, United StatesReported employees: 1,001-5,000 | Ann Arbor, MI, United States | 1,001-5,000 | Exact match | 2,731 contacts → |
“Founded in 1944, NSF is committed to protecting and improving human health and the environment on a global scale.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Nv5nv5.com HQ: Hollywood, TX, United StatesReported employees: 1,001-5,000 | Hollywood, TX, United States | 1,001-5,000 | Exact match | 2,394 contacts → |
“NV5 is a provider of technology, conformity assessment, and consulting solutions for public and private sector clients supporting infrastructure, utility, and building assets and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Stratosphere Qualitystratospherequality.com HQ: Fishers, IN, United StatesReported employees: 1,001-5,000 | Fishers, IN, United States | 1,001-5,000 | Exact match | 1,663 contacts → |
“Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Applied Technical Services, LLCatslab.com HQ: Marietta, GA, United StatesReported employees: 1,001-5,000 | Marietta, GA, United States | 1,001-5,000 | Exact match | 961 contacts → |
“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Mérieux Nutrisciences - Globalmerieuxnutrisciences.com HQ: Tassin La Demi Lune, IL, United StatesReported employees: 10001+ | Tassin La Demi Lune, IL, United States | 10001+ | Exact match | 818 contacts → |
“A world player in food safety, quality, and sustainability for more than 50 years, Mérieux NutriSciences is located in 32 countries with more than 140 accredited laboratories, as…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | TÜV Rheinland North Americatuv.com HQ: Boxborough, CA, United StatesReported employees: 501-1,000 | Boxborough, CA, United States | 501-1,000 | Exact match | 763 contacts → |
“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | SCS Global Servicesscsglobalservices.com HQ: Emeryville, CA, United StatesReported employees: 201-500 | Emeryville, CA, United States | 201-500 | Exact match | 705 contacts → |
“Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | IEH Laboratories And Consulting Groupiehinc.com HQ: Lake Forest Park, GA, United StatesReported employees: 1,001-5,000 | Lake Forest Park, GA, United States | 1,001-5,000 | Exact match | 683 contacts → |
“IEH is an international lab & consulting services company, offering a comprehensive portfolio of lab testing services and consultation across multiple industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Socotec USsocotec.us HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 498 contacts → |
“Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Hohenstein Grouphohenstein.com HQ: Bönnigheim, IN, United StatesReported employees: 1,001-5,000 | Bönnigheim, IN, United States | 1,001-5,000 | Exact match | 494 contacts → |
“Hohenstein Group Hohenstein is a family-owned company with more than 80 years of experience in testing, certification and research.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | SPLspllabs.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 490 contacts → |
“SPL is a leading provider of compliance and testing services for Environmental, Energy, and other end markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Food Safety NET Servicesfsns.com HQ: San Antonio, OH, United StatesReported employees: 501-1,000 | San Antonio, OH, United States | 501-1,000 | Exact match | 458 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | FST Technical Servicesfsttechnical.com HQ: Chandler, PA, United StatesReported employees: 201-500 | Chandler, PA, United States | 201-500 | Exact match | 375 contacts → |
“Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | AETteamaet.com HQ: St. Paul, MN, United StatesReported employees: 201-500 | St. Paul, MN, United States | 201-500 | Exact match | 364 contacts → |
“Our mission at AET is to work together to build a more certain world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Atl, A Bureau Veritas Companyatlscience.com HQ: Milford, OH, United StatesReported employees: 501-1,000 | Milford, OH, United States | 501-1,000 | Exact match | 332 contacts → |
“Founded in 1987, ATL, A Bureau Veritas Company, is a Scientific Sourcing Solutions Company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | TJ Inspection, INCtjinspection.com HQ: Oklahoma City, TX, United StatesReported employees: 201-500 | Oklahoma City, TX, United States | 201-500 | Exact match | 259 contacts → |
“Setting the Standard for Premier Inspection Services in the Oil & Gas Industry through our Dedication to Tradition / Talent / Technology / Teamwork TJ Inspection provides the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Certified Groupcertifiedgroup.com HQ: Melville, NY, United StatesReported employees: 1,001-5,000 | Melville, NY, United States | 1,001-5,000 | Exact match | 241 contacts → |
“Certified Group partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes®.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | MGA Research Corporationmgaresearch.com HQ: Akron, VA, United StatesReported employees: 201-500 | Akron, VA, United States | 201-500 | Exact match | 238 contacts → |
“MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Industrial Inspection & Analysisindustrial-ia.com HQ: Alpharetta, CA, United StatesReported employees: 501-1,000 | Alpharetta, CA, United States | 501-1,000 | Exact match | 231 contacts → |
“Industrial Inspection & Analysis® (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | PRO QC Internationalproqc.com HQ: Mchenry, IL, United StatesReported employees: 501-1,000 | Mchenry, IL, United States | 501-1,000 | Exact match | 219 contacts → |
“Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | PRI Performance Review Institutep-r-i.org HQ: Warrendale, PA, United StatesReported employees: 51-200 | Warrendale, PA, United States | 51-200 | Exact match | 207 contacts → |
“Performance Review Institute® (PRI℠) is headquartered in Pittsburgh, Pennsylvania in the USA, with offices in London, UK to serve Europe and in Beijing, China and Aichi, Japan…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 675 company matches
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Third party testing companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
673 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 675 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Third party testing companies by metro
Questions about this company list
What does Exact match mean for third party testing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many third party testing companies did RevenueBase find based in the United States?
The saved snapshot records 675 matching company records, 82,905 tracked contacts and 30,397 verified emails. The public preview displays 24 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Third party testing companies by geography
- Third party testing companies based in Sao Paulo, Brazil
- Third party testing companies based in Bangalore, India
- Third party testing companies based in Mumbai, India
- Third party testing companies based in Pune, India
- Third party testing companies based in Milan, Italy
- Third party testing companies based in Istanbul, Türkiye
- Third party testing companies based in Dubai, United Arab Emirates
- Third party testing companies based in London, United Kingdom
- Third party testing companies based in Houston, United States
- Third party testing companies based in Argentina
- Third party testing companies based in Australia
- Third party testing companies based in Belgium
Cite this list
RevenueBase Data Team. Top 24 third party testing companies based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/third-party-testing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Third party testing companies based in Sao Paulo, Brazil
- Third party testing companies based in Bangalore, India
- Third party testing companies based in Mumbai, India
- Third party testing companies based in Pune, India
- Third party testing companies based in Milan, Italy
- Third party testing companies based in Istanbul, Türkiye