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Article No.: A70091-2
Articlename: AZURA pH sensor, 100 ml/min

AZURA pH sensor, 100 ml/min

for pH monitor pH 2.1S and conductivity monitor CM 2.1S

The AZURA pH sensor is an optional accessory that can be connected to the pH2.1S conductivity monitor. It comes with a pH electrode with BNC connector, a pH flow cell with integrated bypass, and flat-bottom fittings to connect the pH flow cell to either 1/16" or 1/8" OD tubing. 


Several options are available to physically integrate the sensor into your AZURA system to minimize system volume. Choose from the AZURA Mounting Bracket Bio, the AZURA Organizer, or the AZURA Click System (ordered separately).

Order the pH electrode dummy separately if your application requires frequent removal of the pH electrode.


The recommended maximum flow rate is 100 ml/min, however the pH sensor tolerates higher flow rates. the limiting factor is the maximum pressure of the pH electrode (5 bar). The delay volume of the flow cell with inserted electrode is approx. 80 µl.

Key Features

Technical Data

Flow cell

Body material PEEK
Biocompatible Yes
Connection of flow cell 1/4-28" UNF flat-bottom
Capillary connection 1/16", 1/8"
Wetted materials PEEK, FFKM, glass
Flow cell volume ~ 80 µl (with inserted eclectrode or dummy electrode)
Max. flow rate 100 ml/min
Maximum pressure 5 bar
Back pressure < 0.1 bar at 100 ml/min, ~ 0.5 bar at 250 ml/min (water, RT)
Note Higher flow rates at expense of pressure buildup

Documents and more information

Certified Quality 

KNAUER is known for the quality of its products and has been certified several times. We produce high-tech laboratory instruments for research, routine analysis and production.
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In addition, we have extended documentation about all our products, including CE Declarations of Conformity.
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