i3 TWO sterile filter

Point-of-use Legionella filter for the shower

The i3 TWO point-of-use sterile filter is used in medical settings to prevent infections caused by bacteria such as Legionella pneumophila, Pseudomonas aeruginosa and mycobacteria. It is used as a shower head for the sterile filtration of piped water. The water filter is used in situations where aerosols are formed and protects immunocompromised and immunosuppressed patients receiving medical treatment in oncological, transplant and intensive care units, and also neonates, from infection due to waterborne pathogens.

i3 Membrane's point-of-use sterile filters are CE-marked Class 1 medical devices and fulfil all the requirements of the EU Medical Device Regulation (MDR).

i3 TWO connect: Sterile filter for the shower with quick release connection

The TWO connect has a quick release connector which permits rapid and secure changes of filter on the shower hose. Information about the relevant quick release connection adapters is available here. Link to i3 accessories

i3 TWO direct: Sterile filter for the shower with screw thread connection

The i3 TWO direct has a standard screw thread (1/2") which allows it to be fitted on the shower hose without accessories.


You are interested?

We would be happy to send you an individual offer for our i3 TWO. You can reach us at 040/2576748-0 or send us your request.


  • Effective protection from retrograde contamination throughout the period of use due to the bacteriostatic properties of the filter surface

  • Stable flow rate throughout the 50 day period of use

  • CE-marked medical device whose intended purpose is to prevent infection

  • Quick and easy installation by means of quick release fastening or screw thread

  • Reliable sterile filtration due to the use of a high-performance flat membrane with nominal pore size of 0.2 μm

i3 TWO connect: Sterile filter for the shower with quick release connection
i3 TWO connect - dimensions

Technical data

Flow rate 15 l/min at 5 bar (inital)*
Bacteria retention > 7 log per cm2
Retrograde protection Bacteriostatic features > 4 log Pseudomonas aerionosa, Escherichia coli, Staphylococcus aureus within 24 hours
Disinfection Cleaning with specified disinfectants*
Operating pressure max 5 bar
Operating temperature 60°C (max 70°C over 30 min)
Duration of use 50 days (7 weeks)
Membrane i3 high performance flat membrane
Pore size of membrane 0.2 µm
Shelf live max 5 years
Chlorine resistance Resistant to chemical shock disinfection*
Adaption i3 TWO connect: CPC quick coupling*
i3 TWO direct: G1/2“ 
Accessory Accessory for i3 sterile filter

Linking knowledge

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Christoph-Seydel-Straße 1
01454 Radeberg
Branch/ Billing address
Theodorstraße 41P
22761 Hamburg