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Water sampling equipment

Bürkert has raised the bar in water sampling equipment with the compact Type 8905 Online Analysis System, which features up to six analysis cubes integrated into one modular and compact housing, resulting in precise water quality analysis and reduced installation costs in one modular unit. In this blog, we answer some FAQs about our latest water analysis innovation.


The continuous analysis of water quality parameters is a complex undertaking. Bürkert has made things easier with our Type 8905 Online Analysis System, which features up to six analysis cubes integrated into one modular and compact housing. All the key water sampling parameters are now available at a glance, saving space, time and money - from installation through to operation.

What is this water sampling equipment?

Water sampling euipment

The Type 8905 Online Analysis System is a fluidic platform that combines monitoring of all relevant measurement parameters for water quality analysis. This cutting edge sampling equipment can be used to monitor and control pH, ORP, Chlorine, Conductivity and Turbidity – all from one compact unit.

How does this water sample testing sensor work?

The Online Analysis System is based on the concepts of miniaturisation and modularisation. A key function in miniaturisation is Micro-Electric Mechanical Systems (MEMS) technology, which is being used for the first time in this cutting edge water sample testing sensor. These miniaturised components, with structures down to the nano level, combine electronic and micro-mechanical structures in one chip.

To determine the degree of cloudiness, the Online Analysis System uses detectors for transmitted light and scattered light, as well as laser diodes. The pH measurement is conducted with ion sensitive field effect transistors (ISFET), which can measure the pH value of the water through the selective sensitivity for H+ ions of a field effect transistor. While the ‘Efficient Device Integration Platform’ (EDIP) enables a unified user interface, intuitive touchscreen concepts and interfaces with standardised communication systems.

What water quality analysis applications is it
suitable for?

Water quality analysis system

The functional scope of the Online Analysis System extends to any applications requiring pure and ultrapure water, such as Pharmaceuticals and Food and Beverage production. The Online Analysis System contributes to cost-effective and safe water analysis through optimisation of the controls for single process steps.

Where multiple water sampling flows need to be analysed, it is possible to link up to 30 analysis Sensor Cubes and combine their operational controls to a single touch-screen display. In the future, Bürkert will be developing additional analysis cubes to measure even more parameters, as well as increasing the expansion capabilities.

What are the benefits of this water sampling sensor?

Hot-swapping of additional sensors allows for ultimate flexibility and control – each cube has the same dimensions and connections, so simply ‘plugs in’ to the unit. The different modules can be connected and disconnected during operation and can be combined for customised applications. The unit can also be retrofitted and expanded at any time. Its compact design equals less space requirements, low energy consumption, less wiring, less maintenance and reduced installation costs.

Other benefits include:

  • Flexible communication options – USB, Ethernet and Fieldbus connectivity.
  • Large 7" touchscreen display with intuitive user controls.
  • Ultra-compact sensor cubes require minimal sample water.
  • Sensor cubes can be combined in any way and can be easily exchanged.

If you wish to talk to the Bürkert team about an application, please call us on +44 (0)1285 648720 or drop us an email at

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