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E-direct compliments our traditional offering by providing you with a quick, effective way to purchase easy-to-configure, entry-level instrumentation.

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Total hardness analyzer
Stamolys CA71HA

Colorimetric system for online monitoring of drinking water and industrial water cycles

  • ©Endress+Hauser

The CA71HA online analyzer improves analytic procedures by replacing manual cuvette tests. Its highly accurate measurement supports you in protecting process water cycles from calcification and helps to increase process efficiency. CA71HA also enables you to ensure a high quality of potable water that is suitable for household use and fully complies with international regulations.


  • Reliable correlation to complexometric method

  • Cost savings by replacing manual cuvette tests

  • Reliable and safe documentation of water hardness for the authorities

  • Increased process efficiency and safety thanks to optimized protection from calcification

  • Two-channel version available for lower installation effort

Field of application

Stamolys CA71HA monitors:

  • Reverse osmosis system inlets

  • Ion exchange systems

  • Precipitant addition in drinking water treatment plants

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: CA70HA

Success stories


Endress+Hauser (Ireland) Ltd.
Embassy Office Park Exchequer House Kill County Kildare , Ireland
Tel.: +353 (45) 98 92 00
Fax: +353 (45) 86 81 82
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