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Sample preparation
Liquiline System CAT820

In-situ filtration system for sampling in wastewater treatment plants and surface waters

  • Liquiline System CAT820 - Sample preparation system for aeration, outlets, surface waters ©Endress+Hauser
  • Liquiline System CAT820 - Flexible sample preparation system combined with Flexdip holder ©Endress+Hauser

Liquiline System CAT820 provides clear samples directly from your process. Equipped with Memosens technology, it simplifies commissioning and supports predictive maintenance. Easy cleaning of the special membrane surface and tool-free maintenance reduce your operating costs. CAT820 can be combined with the modular Flexdip holder to facilitate adaption to your process. It is fully controlled by the Liquiline System analyzer, allowing perfect synchronization of your measuring point.


  • Fast commissioning and plug & play thanks to Memosens technology and user-friendly Liquiline operating concept

  • Cost-effective through tool-free maintenance and easy replacement of filter elements

  • Advanced diagnostics with remote access for increased process safety

  • Optional back-flush function for extended maintenance intervals and minimized effort

  • Various mounting options for perfect fit to the application

Field of application

Liquiline System CAT820 is designed for:

  • Aeration basins and outlets of municipal and industrial wastewater treatment plants

  • Surface waters

  • Taking aqueous samples from industrial processes

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: Stamoclean CAT430

Success stories


Endress+Hauser Inc.
2350 Endress Place Greenwood , IN 46143 United States
Tel.: 888-363-7377
Fax: 317-535-8498
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