Ion Exchange Filter IonFree (High Capacity)


  • Ion exchange filter keeps the electrical conductivity of cooling liquid low.
  • Capacity (cations + anions) 1190 meq
  • Automotive design for high capacity
  • Compact and openable design
  • Replaceable cartridge offers an easy service concept
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Ion exchange filter IonFree high capacity

  • To keep the electrical conductivity of the coolant below the permissible limit, ions must be effectively removed.
  • Ion exchanger filters from MANN+HUMMEL with materials and designs optimized for automotive operation ensure system safety.

Key benefits

  • Protection against electrical shorts in the stack: IonFree keeps the conductivity of cooling liquid in fuel cells low through ion exchange technology.
  • Optimum protection: high quality ion exchange resin regarding capacity and purity.
  • Easy to adapt: different sizes, mounting positions, stud angles and stud types allow easy fit in almost every installation space.
  • Clean and easy service: no loss of high quality coolant as only the cartridge needs to be replaced.
  • Large variety of possibilities for you to configure our modular kit to fit your specific application, please refer the data sheet for matrix codes depending on type of application and mounting.
  • Replaceable cartridge with spare part number ION 7001.
  • Standard product offers good economical factor.

Operating parameters

  • Capacity (cation + anion): 1190 meq
  • Flow direction: bottom up
  • Mounting direction: vertical
  • Ion exchange resin: 1:1 mixed bed on anion and cation resin in OH/H form
  • Max. pressure (absolute): 4 bar
  • Operating temperature: -40 °C to +90 °C
  • Electric conductivity: < 5 µS/cm
  • Calculated pressure loss: 370 mbar

Application areas

  • Optional use for mobile or stationary fuel cell applications
  • Protection of the coolant loop

Watch Mann+Hummel fuel cell products in action



Contact us

  • MANN+HUMMEL is able to use its many years of experience in the area of filtration to meet the requirements for future mobility.
  • Fill out the contact form and contact us today!
Dimensions 27.2 cm
Diameter (in mm)

Fluid Connector Type


Max Pressure (in bar)

Max Ambient Temperature (in °C)

Min Ambient Temperature (in °C)

Max Elec. Conductivity (µS/cm)

Pressure Drop (in bar)

Manufacturing Readiness (MRL)

Technology Readiness (TRL)


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Data sheet Mann+Hummel IonFree Gen I

Product datasheet

Data sheet Mann+Hummel IonFree Gen II

Product datasheet

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      MANN+HUMMEL is a leading global company in filtration technology. Under its two business units Transportation and Life Sciences & Environment, the Ludwigsburg-based Group develops intelligent solutions that enable cleaner mobility, cleaner air and cleaner water. Thus, the company makes an important contribution to clean earth and the sustainable use of limited resources. In 2020, over 23,000 employees at more than 80 locations generated a turnover of EUR 4.2 billion. We are your perfect partner to develop and globally scale your fuel cell business as we can leverage more than 80 years of know-how in filtration. You can find the products of MANN+HUMMEL listed on Hyfindr and also in our E-Mobility Onlineshop.


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