Company lists · Data refreshed November 2026

Top 24 Impurity testing laboratories based in the United States

RevenueBase identified 1,078 company matches for impurity testing laboratories associated with the United States as of November 2026 and tracks 71,326 professional contacts across them, including 25,255 with verified work emails. Houston is the largest hub.

This list covers company matches for impurity testing laboratories 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,078Companies
71,326Contacts tracked
25,255Verified emails
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The 24 largest impurity testing laboratories based in the United States

Ranked by team size
Top 24 of 1,078 company matches for impurity testing laboratories based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchCranbury, NJ, United StatesHQ recorded Nov 6, 20265,001-10,0003,737 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
2Exact matchFramingham, CA, United StatesHQ recorded Nov 6, 20261,001-5,0002,425 contacts →

Exact match

“SCIEX helps to improve the world we live in by enabling scientists and laboratory analysts to find answers to the complex analytical challenges they face.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMinneapolis, NC, United StatesHQ recorded Nov 6, 20261,001-5,0002,334 contacts →

Exact match

“Pace® Science and Technology Company makes the world a safer, healthier place.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLancaster, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,676 contacts →

Exact match

“Eurofins Lancaster Laboratories is one of the largest commercial contract laboratories in the world providing comprehensive laboratory services in the pharmaceutical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMarietta, GA, United StatesHQ recorded Nov 6, 20261,001-5,000961 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
6Exact matchCinnaminson, NJ, United StatesHQ recorded Nov 6, 2026501-1,000766 contacts →

Exact match

“As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNashville, TN, United StatesHQ recorded Nov 6, 2026501-1,000738 contacts →

Exact match

“Founded in 1990, Aegis Sciences Corporation is a forensic toxicology and healthcare laboratory that provides science-driven drug testing and consulting services based in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLake Forest Park, GA, United StatesHQ recorded Nov 6, 20261,001-5,000683 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
9Exact matchSan Diego, NY, United StatesHQ recorded Nov 6, 20261,001-5,000613 contacts →

Exact match

“When it comes to understanding the physical structure, chemical properties and performance of advanced materials and integrated circuitry, no other scientific services company…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPittsburgh, OH, United StatesHQ recorded Nov 6, 2026501-1,000500 contacts →

Exact match

“Companies of all sizes partner with Microbac to test the quality, safety, and performance of their products and operations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000490 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
12Exact matchSan Antonio, OH, United StatesHQ recorded Nov 6, 2026501-1,000458 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
13Exact matchMilford, OH, United StatesHQ recorded Nov 6, 2026501-1,000332 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
14Exact matchNorth Kingstown, RI, United StatesHQ recorded Nov 6, 2026201-500331 contacts →

Exact match

“For over 25 years, Dominion Diagnostics has been advancing patient care through trusted diagnostics as a premier urine drug testing and toxicology laboratory.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 2026201-500313 contacts →

Exact match

“ARL Bio Pharma is a contract laboratory that provides analytical and microbiological testing for the pharmaceutical industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMelville, IL, United StatesHQ recorded Nov 6, 20261,001-5,000308 contacts →

Exact match

“As part of Certified Group, Certified Laboratories 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
17Exact matchSalem, NC, United StatesHQ recorded Nov 6, 2026201-500268 contacts →

Exact match

“Since its founding in 1987, BA Sciences has been a trusted provider of high-quality analytical testing services to life science companies worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 2026501-1,000259 contacts →

Exact match

“Precision Diagnostics is the only U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGolden, CO, United StatesHQ recorded Nov 6, 202651-200259 contacts →

Exact match

“For more than 40 years, Waters ERA has been providing analytical laboratories and organizations that rely on laboratory data with the products and services they need to achieve…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNiles, WI, United StatesHQ recorded Nov 6, 2026201-500255 contacts →

Exact match

“Deibel Laboratories started in 1967 by Dr.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchColumbia, MO, United StatesHQ recorded Nov 6, 20261,001-5,000252 contacts →

Exact match

“ABC Laboratories is now part of EAG Laboratories, a global scientific services company serving clients across a vast array of technology-related industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWestborough, UT, United StatesHQ recorded Nov 6, 2026201-500250 contacts →

Exact match

“KPM Analytics is a global leader in analytical instrumentation primarily focused on analyzing critical parameters within the food, agriculture, clinical and environmental sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWestborough, NY, United StatesHQ recorded Nov 6, 2026501-1,000243 contacts →

Exact match

“Since 1987, Alpha Analytical, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMelville, NY, United StatesHQ recorded Nov 6, 20261,001-5,000241 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

Showing 24 of 1,078 impurity testing laboratories based in the United States

See the full list, filter by size, metro and specialty, and access 25,255 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Impurity testing laboratories based in the United States at a glance

As of Nov 6, 2026
35.4%Verified-email coverage
66.2Average contacts per company
11-50Median size (employees)
2.3%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
394
11-50
451
51-200
158
201-500
29
501-1,000
18
1,001-5,000
18
5,001-10,000
3
10001+
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 1,078 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 “impurity testing laboratories” 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 25,255 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.

Impurity testing laboratories 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 “impurity testing laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many impurity testing laboratories are there based in the United States?

RevenueBase identified 1,078 company matches for impurity testing laboratories 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?

Amspec Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most impurity testing laboratories?

Houston leads with 25 company records, followed by San Diego (14) and Portland (12).

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 25,255 professional contacts with verified work emails tracked across these 1,078 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.

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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.