Conductivity monitor mikron 81 with biocompatible flow cell

for up to 100 ml/min

The mikron 81 is a reliable in-line conductivity monitor with a very low footprint and measures with high linearity in the range from 0.002 to 500 mS/cm. Its cutting-edge temperature sensor technology enables highly precise automated temperature correction of the conductivity signal. The intelligent flow cell design allows for a broad flow rate regime from microliter to lower liter per minute scale. It comes pre-calibrated and ready-to-use with all accessories needed.

Common applications

Monitoring salt gradients in FPLC systems
Cleaning-in-place monitoring in process plants and skids
Value-based triggering within a flow system
Upscaling (eg. from 1 ml/min to 1 l/min)

Ask our support (support@knauer.net) for driver scripts to work without CDS.

Order recommendation

ADG61GD is the ideal choice for low flow applications with ion-sensitive components in the system.
It is optimized for monitoring a wide range of conductivity values from 10 µS/cm to 500 mS/cm in a small measurement volume.

ADG61GE is the ideal choice for FPLC applications with high flow and highly viscous solutions.
It is designed to monitor conductivity values in the range of 2 µS/cm to 100 mS/cm at low back pressure.

Scope of delivery

ADG61GD and ADG61GE, respectively comes with;

Mounting bracked incl. screws for installation to an AZURA L module (ADG6101)
3 m cable for direct connection to a USB-A port of a PC (part of ADG6102)
User manual in four languages (EN, GE, FR, ES) (part of ADG6102)
Fittings and ferrules to connect either 1/16" or 1/8" OD tubing (FZG10)

Flow cell type	Conductivity flow cell
Body material	Titanium
Biocompatible	Yes
Capillary connection	UNF 1/4-28, flat bottom
Wetted materials	Titanium, PEEK
Flow cell volume	11 µl
Max. flow rate	100 ml/min
Maximum pressure	Max. 171 bar (depending on utilized ferrule and fitting, see linked FAQ)
Back pressure	< 0.1 bar at 100 ml/min, ~1 bar at 500 ml/min (water, room temperature)
Note	Color code: blue. 50 cm^-1 nominal cell constant

Detector type	Conductivity monitor
Sensor	Conductivity and temperature
Measurement accuracy	Conductivity: ± 2 % or ± 2 mS/cm (whatever is greater) Temperature: ± 0.2 °C
Measurement precision	Conductivity: ± 0.2 % or ± 0.2 mS/cm (whatever is greater) Temperature: ± 0.1 °C (determined for 1-250 mS/cm)
Measurement range	0.010 - 300 mS/cm (linear), 0.010 - 500 mS/cm (display)
Linearity	< 2 % full scale value (0.010 - 500 mS/cm)
pH measurement	None
Maximum data rate	Conductivity: 10 Hz (variable in 1 Hz steps) Temperature: 1 Hz (fixed)
Wetted materials	Titanium, PEEK
Max. flow rate	100 ml/min

D/A conversion	None
Analog inputs	None
Analog outputs	None
Digital inputs	Via hyperterminal
Digital outputs	Via hyperterminal
Digital control and output	Via PurityChrom or ClarityChrom
Interfaces	via USB-C

Special features	Free of charge calibration software (see below)
GLP	Serial number Firmware version Number of switching cycles Operating hours Date of last maintenance by customer service Date of last validity check
Conformity	CE, UKCA For wetted parts: EN 10204-3.1, ADI-free
Display	None
Ambient conditions	Operating temperature: 3 – 45°C, 37.4 – 113°F Relative humidity: 0 – 90 %, non condensing

Power supply	Max. 5 V via USB connection (max. 500 mA, max. 2.5 W power uptake)
Dimensions	32 x 83 mm (Diameter x Length)
Weight	95 g (monitor + flow cell)

Optional accessories	Adapters to connect 3/16" or 1/4" OD tubing (see linked FAQ)

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.
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.