Company lists · Data refreshed November 2026

Top 23 Electromagnetic testing services based in the United States

RevenueBase identified 421 company matches for electromagnetic testing services associated with the United States as of November 2026 and tracks 7,772 professional contacts across them, including 2,364 with verified work emails. Houston is the largest hub.

This list covers company matches for electromagnetic testing services 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
421Companies
7,772Contacts tracked
2,364Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 23 largest electromagnetic testing services based in the United States

Ranked by team size
Top 23 of 421 company matches for electromagnetic testing services 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 matchMaryland Heights, MI, United StatesHQ recorded Nov 6, 2026501-1,000678 contacts →

Exact match

“Electric Power Systems is an independent electrical testing & engineering organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMarlborough, MA, United StatesHQ recorded Nov 6, 2026501-1,000662 contacts →

Exact match

“Doble is the world’s most trusted brand in electrical diagnostics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchTomball, TX, United StatesHQ recorded Nov 6, 20265,001-10,000366 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWesterville, SC, United StatesHQ recorded Nov 6, 2026201-500270 contacts →

Exact match

“In business since 1971, Electrical Reliability Services, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBaltimore, TX, United StatesHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500164 contacts →

Exact match

“About Us Cutting-edge technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSnoqualmie, WA, United StatesHQ recorded Nov 6, 202651-200156 contacts →

Exact match

“ZETEC is a global leader in nondestructive testing (NDT) solutions for the critical inspection needs of industries the world counts on, including - Power Generation - Oil and Gas…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBurton, IN, United StatesHQ recorded Nov 6, 2026501-1,000156 contacts →

Exact match

“Trialon is now Element!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHarvey, LA, United StatesHQ recorded Nov 6, 2026201-500125 contacts →

Exact match

“CAN USA provides NDT inspection, on-line maintenance and repair while maintaining an unsurpassed safety record.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchElmsford, NY, United StatesHQ recorded Nov 6, 202651-200104 contacts →

Exact match

“Magnetic Analysis Corporation has over 95 years of experience as a leader in non-destructive testing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 2026201-50099 contacts →

Exact match

“Superior Integrity Services is a national leader in non-destructive and integrity services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDowners Grove, IL, United StatesHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Founded in 1954, Elite Electronic Engineering, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchScott, LA, United StatesHQ recorded Nov 6, 2026201-50097 contacts →

Exact match

“About: National Inspection Services is a full service Nondestructive Testing (NDT) company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHolbrook, MA, United StatesHQ recorded Nov 6, 2026n/a95 contacts →

Exact match

“Specialists in Electrical Power Systems - Testing, Commissioning, Maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchElk Grove Village, IL, United StatesHQ recorded Nov 6, 2026201-50084 contacts →

Exact match

“MIL provides the following services to the Aerospace, Medical, Industrial and Power Generation industries: • Non-destructive testing including Fluorescent Penetrant, Magnetic…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLakewood, CO, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Electro Magnetic Applications, Inc.(EMA) is a leader in electromagnetic simulation, testing, and consulting for aerospace, defense, automotive, and electronics industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMariposa, CA, United StatesHQ recorded Nov 6, 202611-5074 contacts →

Exact match

“Founded in 1973, CKC Laboratories offers premier EMC Testing and Design Consultation services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMassillon, AL, United StatesHQ recorded Nov 6, 2026201-50070 contacts →

Exact match

“Magnetech is an ISO-quality provider of electrical-mechanical industrial services, including testing, repair, rewind and refurbishment of ac/dc motors and generators…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20066 contacts →

Exact match

“Zadok Technologies – Providing Engineering And Field Services To The World Quality Companies provides engineering and field services to the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchConverse, TX, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“WELCOME Power Engineering Services is an Accredited, Full-Member of the International Electrical Testing Association (NETA), and a Registered Engineering Firm in 46 states.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchEnfield, CT, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“PTI was founded over thirty five years ago as a provider of non-destructive testing services to machine shops serving the aerospace, power generation, and medical industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCumberland, VA, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Contact Information: 877-816-9081 info@americanefficiency.com AES is your source for safe, superior, guaranteed Leak Detection, Tube Cleaning, and Industrial Inspections.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“Since 1996, Bay Area Compliance Laboratories Corp.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 23 of 421 electromagnetic testing services based in the United States

See the full list, filter by size, metro and specialty, and access 2,364 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Electromagnetic testing services based in the United States at a glance

As of Nov 6, 2026
30.4%Verified-email coverage
18.5Average contacts per company
11-50Median size (employees)
3.6%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
175
11-50
162
51-200
58
201-500
18
501-1,000
5
5,001-10,000
2

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 421 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 “electromagnetic testing services” 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 2,364 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.

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

How many electromagnetic testing services are there based in the United States?

RevenueBase identified 421 company matches for electromagnetic testing services 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?

Electric Power Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most electromagnetic testing services?

Houston leads with 15 company records, followed by Broussard (6) and Baton Rouge (5).

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 2,364 professional contacts with verified work emails tracked across these 421 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 421 electromagnetic testing services based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.