Company lists · Data refreshed September 2026

Top 25 Filter media and treatment device manufacturers based in Germany

Name: Filter media and treatment device manufacturers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 210 companies tracked

RevenueBase identified 210 filter media and treatment device manufacturers headquartered in Germany as of September 2026 and tracks 3,376 professional contacts across them, including 1,278 with verified work emails. Hilden is the largest hub.

This list covers filter media and treatment device manufacturers headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

210Companies

3,376Contacts tracked

1,278Verified emails

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The 25 largest filter media and treatment device manufacturers based in Germany

Ranked by team size

Top 25 of 210 filter media and treatment device manufacturers based in Germany, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to filter media and treatment device manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Freudenberg Filtration Technologies	Partial evidence	Weinheim, GermanyHQ checked Sep 16, 2026	1,001-5,000	833 contacts →
	Partial evidence “Protecting people and the environment, conserving resources and optimizing industrial processes – those are the things that drive us and make us proud at Freudenberg Filtration…” Source: RevenueBase Database · checked Sep 16, 2026
2	Boll & Kirch Filterbau Gmbh Bollfilter	Strong evidence	Kerpen, GermanyHQ checked Sep 16, 2026	501-1,000	228 contacts →
	Strong evidence “As your experienced filter manufacturer, we can offer you filter systems based on many years of experience that guarantee maximum safety, reliability and protection.” Source: RevenueBase Database · checked Sep 16, 2026
3	Grünbeck AG	Partial evidence	Höchstädt, GermanyHQ checked Sep 16, 2026	501-1,000	157 contacts →
	Partial evidence “Know-how seit über 75 Jahren: Die Grünbeck AG bietet sowohl bewährte als auch innovative Produkte zur Trinkwasseraufbereitung im Bereich Enthärtungs, Filter- und Dosiertechnik…” Source: RevenueBase Database · checked Sep 16, 2026
4	Aqseptence Group	Indirect evidence	Aarbergen, GermanyHQ checked Sep 16, 2026	1,001-5,000	153 contacts →
	Indirect evidence “Water is becoming one of the defining challenges of our century.” Source: RevenueBase Database · checked Sep 16, 2026
5	AAF International American AIR Filter Europe & Dinair	Strong evidence	Heppenheim, GermanyHQ checked Sep 16, 2026	501-1,000	131 contacts →
	Strong evidence “AAF International, the world's largest manufacturer of air filtration solutions, operates production, warehouse and distribution facilities in 22 countries on four continents.” Source: RevenueBase Database · checked Sep 16, 2026
6	BWT Wassertechnik Gmbh	Indirect evidence	Schriesheim, GermanyHQ checked Sep 16, 2026	201-500	115 contacts →
	Indirect evidence “Wasser ist nicht nur eine kostbare Lebensressource, sondern auch eine der großen Herausforderungen dieses Jahrhunderts.” Source: RevenueBase Database · checked Sep 16, 2026
7	Herding Filtertechnik	Partial evidence	Amberg, GermanyHQ checked Sep 16, 2026	201-500	110 contacts →
	Partial evidence “Effiziente Filtration von Luft und Gasen für stabile Produktionsprozesse und höchste Anlagenperformance Herding Filtertechnik ist ein weltweit tätiger, familiengeführter…” Source: RevenueBase Database · checked Sep 16, 2026
8	Keller Lufttechnik Gmbh	Partial evidence	Kirchheim Unter Teck, GermanyHQ checked Sep 16, 2026	201-500	89 contacts →
	Partial evidence “Unsere Leidenschaft ist es, mit innovativer Filtertechnik und nachhaltigen Absauglösungen für reine Luft in der Industrie zu sorgen.” Source: RevenueBase Database · checked Sep 16, 2026
9	Cerafiltec	Indirect evidence	Saarbrücken, GermanyHQ checked Sep 16, 2026	51-200	67 contacts →
	Indirect evidence “Cerafiltec is a German-based technology solution provider specializing in developing and producing high-performance ceramic modules and components.” Source: RevenueBase Database · checked Sep 16, 2026
10	Lenser Filtration Gmbh	Strong evidence	Senden, GermanyHQ checked Sep 16, 2026	201-500	56 contacts →
	Strong evidence “LENSER - Your #FiltrationExpert LENSER is one of the world's leading manufacturers of filter elements for solid/liquid separation and a subsidiary of the internationally…” Source: RevenueBase Database · checked Sep 16, 2026
11	Elsässer Filtertechnik Gmbh	Partial evidence	Nufringen, GermanyHQ checked Sep 16, 2026	51-200	44 contacts →
	Partial evidence “Über 45 Jahre ELSÄSSER Filtertechnik: Was 1979 als kleines Ingenieurbüro, gegründet von Gerhard Elsässer, begann, hat sich bis heute zum führenden Filterhändler in der DACH Region…” Source: RevenueBase Database · checked Sep 16, 2026
12	Hengst Filtration Indoor AIR Filtration	Partial evidence	Herne, GermanyHQ checked Sep 16, 2026	1,001-5,000	41 contacts →
	Partial evidence “Hengst Filtration one of the leading technological leaders in air filtration.” Source: RevenueBase Database · checked Sep 16, 2026
13	BWF Envirotec	Indirect evidence	Offingen, GermanyHQ checked Sep 16, 2026	1,001-5,000	41 contacts →
	Indirect evidence “We Care For Clean Air.” Source: RevenueBase Database · checked Sep 16, 2026
14	TEKA	Strong evidence	Coesfeld, GermanyHQ checked Sep 16, 2026	51-200	36 contacts →
	Strong evidence “TEKA - Your partner for pure air at the workplace TEKA Absaug- und Entsorgungstechnologie has been for more than 25 years one of the leading manufacturers of extraction and filter…” Source: RevenueBase Database · checked Sep 16, 2026
15	Faudi Gmbh	Strong evidence	Stadtallendorf, GermanyHQ checked Sep 16, 2026	51-200	33 contacts →
	Strong evidence “FAUDI GmbH is one of the leading international manufacturers of filtration and separation technology.” Source: RevenueBase Database · checked Sep 16, 2026
16	Rt-Filtertechnik Gmbh	Partial evidence	Friedrichshafen, GermanyHQ checked Sep 16, 2026	201-500	31 contacts →
	Partial evidence “Die RT-Filtertechnik GmbH ist ein international tätiges, mittelständiges Innovationsunternehmen für Filtrationstechnik in den Bereichen Mobilhydraulik, Industriehydraulik…” Source: RevenueBase Database · checked Sep 16, 2026
17	FST Gmbh	Strong evidence	Essen, GermanyHQ checked Sep 16, 2026	51-200	27 contacts →
	Strong evidence “We are FST GmbH Filtrations-Separations-Technik and are specialized in the area of industrial air and gas treatment, a market segment with an increasing demand for innovative…” Source: RevenueBase Database · checked Sep 16, 2026
18	MKR Metzger Gmbh	Indirect evidence	Monheim, GermanyHQ checked Sep 16, 2026	51-200	27 contacts →
	Indirect evidence “Success story - tradition becomes innovation MKR Metzger can look back on three successful decades.” Source: RevenueBase Database · checked Sep 16, 2026
19	Riensch & Held Gmbh & Co. KG	Indirect evidence	Hamburg, GermanyHQ checked Sep 16, 2026	51-200	24 contacts →
	Indirect evidence “We are a modern, medium-sized company in Hamburg.” Source: RevenueBase Database · checked Sep 16, 2026
20	Branofilter Gmbh	Indirect evidence	Dietenhofen, GermanyHQ checked Sep 16, 2026	51-200	23 contacts →
	Indirect evidence “BRANOfilter.” Source: RevenueBase Database · checked Sep 16, 2026
21	JVK Filtration Systems Gmbh	Strong evidence	Georgensgmünd, GermanyHQ checked Sep 16, 2026	51-200	22 contacts →
	Strong evidence “JVK® Filtration Systems GmbH is a German company specializing in the development and manufacture of filter elements.” Source: RevenueBase Database · checked Sep 16, 2026
22	Irema-Filter Gmbh	Strong evidence	Postbauer-heng, GermanyHQ checked Sep 16, 2026	51-200	20 contacts →
	Strong evidence “For over 45 years IREMA-Filter is known as one of the most innovative synthetic media manufacturer in the filter media industry worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
23	Almawatech	Indirect evidence	Babenhausen, GermanyHQ checked Sep 16, 2026	51-200	20 contacts →
	Indirect evidence “ALMAWATECH – Anlagenbau & Prozesslösungen für industrielle Wassertechnik Die ALMAWATECH GmbH ist ein familiengeführtes Unternehmen mit langer Tradition in der industriellen…” Source: RevenueBase Database · checked Sep 16, 2026
24	Xylem Water Solutions Herford Gmbh	Indirect evidence	Herford, GermanyHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
25	Osmo Membrane Systems Gmbh	Partial evidence	Leonberg, GermanyHQ checked Sep 16, 2026	11-50	19 contacts →
	Partial evidence “OSMO Membrane Systems GmbH a highly specialised company of the GAW Group, develops and implements industrial filtration and membrane separation processes for demanding, customised…” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: filter media and treatment device manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names filter media and treatment device manufacturers.
Partial evidence: Its own public description names part of filter media and treatment device manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name filter media and treatment device manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 210 filter media and treatment device manufacturers based in Germany

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Filter media and treatment device manufacturers based in Germany at a glance

As of Sep 16, 2026

37.9%Verified-email coverage

16.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Hilden

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 210 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among filter media and treatment device manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “filter media and treatment device manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names filter media and treatment device manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among filter media and treatment device manufacturers, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,278 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names filter media and treatment device manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many filter media and treatment device manufacturers are there based in Germany?

RevenueBase identified 210 filter media and treatment device manufacturers headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Freudenberg Filtration Technologies, headquartered in Weinheim, tops this list with the largest team on record.

Which city has the most filter media and treatment device manufacturers?

Hilden leads with 3 headquartered companies, followed by Mannheim (3) and Salach (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,278 verified decision-maker contacts tracked across these 210 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.