Company lists · Data refreshed November 2026

Top 25 Iso cleanroom testing services based in Germany

RevenueBase identified 60 company matches for iso cleanroom testing services associated with Germany as of November 2026 and tracks 741 professional contacts across them, including 351 with verified work emails. Berlin is the largest hub.

This list covers company matches for iso cleanroom testing services associated with Germany, 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
60Companies
741Contacts tracked
351Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest iso cleanroom testing services based in Germany

Ranked by team size
Top 25 of 60 company matches for iso cleanroom testing services based in Germany, 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 matchBillerbeck, GermanyHQ recorded Nov 6, 2026201-500111 contacts →

Exact match

“Franz Ziel GmbH stands for innovation, reliability and development in cleanroom technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchFreiburg, GermanyHQ recorded Nov 6, 202651-200110 contacts →

Exact match

“CRC Clean Room Consulting GmbH - Gesellschaft für Reinraumtechnik CRC – Your premium ENGINEERING partner EPCM for Wafer-Fabs and High-Tech Facilities Du hast Freude am HI-TEC…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNeckartailfingen, GermanyHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“Since the company was founded in 1952 by Norbert Daldrop and Erwin Huber, we have been driven by a thirst for discovery.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMücke, GermanyHQ recorded Nov 6, 2026201-50044 contacts →

Exact match

“Since 1988, MK Versuchsanlagen GmbH & Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchEmmingen-liptingen, GermanyHQ recorded Nov 6, 202651-20038 contacts →

Exact match

“CleanControlling stands for comprehensive services in the fields of technical, medical and environmental cleanliness for surfaces, materials and media.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTübingen, GermanyHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“Accredited to ISO 17025 for validation of cleaning, disinfection and sterilization processes; Production of test devices for validation; Type testing of cleaning and disinfection…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWutöschingen, GermanyHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“We at Schilling Engineering GmbH support our customers in creating a process-safe cleanroom according to individual requirements - from the solution concept for particle-free…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSchwerin, GermanyHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Is the testing and safety of your individual medical device and your disinfectant important to you?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWunstorf, GermanyHQ recorded Nov 6, 202611-5015 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchRadolfzell, GermanyHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Sauberkeit ist nicht immer nur eine Frage des guten Geschmacks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHeuchelheim, GermanyHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“We offer customized cleanroom solutions as e.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchD-52477 Alsdorf Und Ch-4332 Stein, GermanyHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Die CRT Cleanroom-Technology Group ist neutraler Dienstleister für Betreiber von Reinräumen und Reinraumlieferanten und gehört zur Trescal Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchReutlingen, GermanyHQ recorded Nov 6, 202651-20011 contacts →

Exact match

“Die ap-systems GmbH ist der qualifizierte Spezialist für Reinraumtechnik.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchErding, GermanyHQ recorded Nov 6, 202651-20011 contacts →

Exact match

“Wussten Sie, dass ein winziges Staubkorn auf einem Mikrochip den Start einer Weltraumrakete verhindern kann?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHeimsheim, GermanyHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Die PMT Partikel-Messtechnik GmbH ist seit über 35 Jahren im Bereich der partikulären und mikrobiologischen Kontaminationskontrolle aktiv.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDonaueschingen, GermanyHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Herstellung von Bauteilen mit Mikrobohrung und analytisches reinigen montieren und verpacken unter Reinstraumbedingungen”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUlm, GermanyHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Reinraumtechnik Ulm entwickelt und fertigt GMP und FDA konforme Reinraumsysteme sowohl für den Produkt- als auch Personenschutz.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchIngelheim Am Rhein, GermanyHQ recorded Nov 6, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchOberursel (taunus), GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMunich, GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Wir ermöglichen unseren Kunden eine schnelle und kompetente Validierung ihres Produkts - technisch fundierte Beratung - transparente Kosten - präzise Prüfungsplanung - Als…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchRadeberg, GermanyHQ recorded Nov 6, 202611-502 contacts →

Exact match

“Systeme und Technik für Ihren Reinraum”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBerlin, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Die Vervielfältigung der enthaltenen Daten und Informationen bedarf der schriftlichen Zustimmung des Unternehmens Geithner Cleaning Ihr Reinraumspezialist.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHamburg, GermanyHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Nordair Systems is a spin-off of Helmut Schmidt University and focuses on individual cleanroom workstations for laser technology, optics, medical technology, pharmaceuticals…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchFrankfurt, GermanyHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Cleanroom Future takes you to the future Cleanroom Future promotes efficient cleanroom operations, creative solutions to cleanroom building, and a commitment to addressing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchReutlingen, GermanyHQ recorded Nov 6, 2026n/a1 contacts →

Exact match

Recorded description not available.

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

Showing 25 of 60 iso cleanroom testing services based in Germany

See the full list, filter by size, metro and specialty, and access 351 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Iso cleanroom testing services based in Germany at a glance

As of Nov 6, 2026
47.4%Verified-email coverage
12.3Average contacts per company
11-50Median size (employees)
6.7%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
18
51-200
12
201-500
3
501-1,000
1

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 60 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 Germany whose business descriptions match “iso cleanroom 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 351 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 “iso cleanroom testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many iso cleanroom testing services are there based in Germany?

RevenueBase identified 60 company matches for iso cleanroom testing services associated with Germany 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?

Franz Ziel Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most iso cleanroom testing services?

Berlin leads with 4 company records, followed by Neckartailfingen (3) and Hamburg (2).

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 351 professional contacts with verified work emails tracked across these 60 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 60 iso cleanroom testing services based in Germany. 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.