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Article No.: ADG30
Articlename: AZURA CM 2.1S without flow cell

Conductivity monitor with optional pH measurement

Main unit for parallel conductivity and pH monitoring

The AZURA CM 2.1S is a reliable conductivity monitor which is usually utilized in FPLC to follow salt gradients. By adding a pH sensor also pH values can be measured.

The contactless measurements of conductivity reduces the risk of carryover to a minimum and makes the device easy to maintain. The fully biocompatible flow cells cover a flow rate of up to 100 ml/min. Choose between ADG30GC and ADG30GD for a CM 2.1S with ready to measure flow cells for either 10 or 100 ml/min maximum flow.


Technical Data

Flow cell

Flow cell type Contactless conductivity flow cell
Biocompatible Yes
Connection of flow cell Female 10-32" UNF or M8x1 thread (PEEK) – both included in shipment
Capillary connection 1/16" or 1/8" – both included in shipment
Wetted materials PEEK


Detector type Conductivity monitor
Measurement accuracy Conductivity: ± 2 % full scale value (0.1 - 300 mS/cm), ± 5 % full scale value (300 - 999 mS/cm)
Temperature: ± 1.0°C
pH 2 - 12: ± 0.2 pH (15 - 25°C), ± 0.5 pH (4 - 40°C)
Measurement range Conductivity: 0.1 - 999 mS/cm
pH: 0 - 14
Linearity Conductivity: ± 1 % full scale value (0.1 - 300 mS/cm), ± 1 % full scale value (300 - 999 mS/cm)
pH measurement Optionally
Maximum data rate 5 Hz
Supported electrodes All pH electrodes with BNC connector and a voltage output of maximal ± 500 mV


Analog outputs 2 channels (conductivity and pH value – not active if remote controlled by software)
DAC 18 bit
Digital outputs LAN; RS-232

Technical parameters

GLP Electronic serial number
Display LCD, 2 x 8 characters
Ambient conditions Operating temperature: 4 – 40°C, 39,2 – 104 °F
Relative humidity: below 90 %, non condensing


Power supply 100 - 240 V, 50 - 60 Hz, max. 20 W
Dimensions 121 x 129 x 187 mm (W x H x D)
Weight 3.2 kg

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 for 59 years.
See all Quality certificates

In addition, we have extended documentation about all our products, including CE Declarations of Conformity.
See all CE Declarations of conformity

Innovation and quality - since 1962. Made in Germany.

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