Our filter devices are energy efficient, digitized and easy to maintain.


ISI Air filter- for clean air at the work place

Our filter devices are energy efficient, digitized and easy to maintain.


ISI Air filter- for clean air at the work place

Our filter devices are energy efficient, digitized and easy to maintain.


We have the right solution for every application:

Areas of application for industrial air cleaners

To minimise different risks, we are at your disposal with our expertise. We determine the suitable device for your application.

Basically, we distinguish between the following applications when designing our industrial air cleaners

Oil mist

Oil mist is produced during machining with pure oil as a cooling lubricant. Oil mist is a large quantity of airborne, very fine oil droplets which are produced during turning, milling, drilling or grinding with oil and during dry machining with minimum quantity lubrication.

Emulsion mist

When water-miscible cooling lubricants are used, emulsion mist is produced. This refers to a large quantity of airborne, very fine liquid particles. These are produced during turning, milling, drilling and grinding.

Oil/emulsion mist

With smoke development. During heavy-duty machining with oil or emulsion (with more than 5% oil content), oil or emulsion mist with smoke development occurs due to the high process temperatures. Smoke in particular is difficult to filter with its fine particles.

The new form of electrostatic filter cell


An IONIC BOOSTER CELL* is an electrostatic filter cell that has been optimised to the technical maximum. By converting the ioniser area, a much denser ionisation field is created. As a result, we achieve an improvement in separation efficiency of up to 35% with the same cell size and dimensions. You can easily insert the IONIC BOOSTER CELL* into your existing ISI filter unit. No additional conversion work is required on your part.

Find out more here!

ISI Production

All our air filter units are developed and manufactured to high quality standards at our headquarters in Rhineland-Palatinate.

ISI Sales

Throughout Germany, the employees of ISI-Vertriebs GmbH are at your service and will advise you on all questions of industrial air pollution control.

ISI Service

Put the cleaning and maintenance of your industrial air cleaners in experienced hands and use our manufacturer service.

We introduce ourselves

The ISI Principle: Clean air at the work place.

Clean air is our most important asset. Across Europe, the commitment to clean air and environmental protection has come into focus. Industrial air pollution control plays a significant role in this. As specialists, we help you to free the air in your company from oil mist and emulsion mist in the best possible way. To do this, we draw on more than 46 years of experience.

We are partners for companies in the machining industry and advise you from the planning stage to the purchase of an industrial air purifier. We accompany this process from the development of a suitable extraction solution to installation and service after delivery. It is important to us that we remain at your side as your contact partner for all aspects of industrial air purification, even after the purchase.

To ensure that your industrial air cleaners work optimally in the long term, they require regular maintenance. Our manufacturer’s service for maintenance and cleaning will gladly take over these tasks for you. Optimally maintained air filter units guarantee trouble-free operation with the best separation efficiencies and long service lives.

All over the world, our customers trust our competence in the field of industrial air purification. With over 50,000 air filter units sold, we ensure clean air and the health of your employees.

Many options for your individual solution

Our device series

Mechanisches Kombinationsfiltergerät

Mechanisches Filtergerät

Elektrostatisches Filtergerät

Service for air filter units

ISI manufacturer’s service

Air filter units require regular maintenance and cleaning in order to achieve optimum separation rates, safety in the production process and long service lives. The professional cleaning of the filter elements is a central component for reliable and smooth unit operation.

ISI Service GmbH offers you a professional all-round service consisting of:

  • Unit assembly
  • Maintenance & cleaning of your filter units
  • Repair
  • Spare parts service with original ISI spare parts

You can choose between our three service packages: BASIC PACKAGE, PREMIUM PACKAGE and the INDIVIDUAL PACKAGE. No matter which solution you choose, with ISI Service GmbH you have a competent and professional partner at your side.

Use our cleaning service for all electrostatic filter cells (manufacturer-independent) and discover the difference! In addition to cleaning in an ultrasonic bath, all filter cells are subjected to a final functional test. Here we check, for example, the distances between the collector plates, realign them if necessary or replace torn ionisation wires.

48 years



Air filter units sold

40 employees

in use for you

over 40

Product variants

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ISI Industrieprodukte GmbH 53567 Buchholz Mendt
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