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Conductivity Sensor, Flow-Thru for Mark 25

Original price $695.00 - Original price $695.00
Original price
$695.00 - $695.00
Current price $695.00

Delivery time

In stock and ready to ship

Martek sensors are built to the most exacting standards. 

Each sensor comes complete with its own integrated flow cell, DB25 connector, and 9 feet of cable. Additional lengths are available up to 100 feet.

All conductivity sensors feature Type 316 Stainless Steel and Teflon materials manufactured from temperature and corrosion-resistant plastics and precious metals. In addition, all sensors require minimum sample volumes eliminating the need for bulky flow chambers. 

For use with the Mark 25 and the Dissolved Carbon Dioxide Analyzer.

Please select the measurement range from the drop down menu on the left.

p/n 185-21:    0-100 uS/cm

p/n 185-22:    0-1000 uS/cm


Operating Temperature

2.0 to 100.0℃ @ 20 psi

Maximum Pressure

150 psi @ 50.0℃

Flow Requirement

50.0 to 450.0 ml/min

Electrode Type

Type 316 Stainless Steel, two-element cell


8.0” x 1.25” x 3.0” LWD


2.0 lbs


316 Stainless Steel and Teflon



Manufactured in



Part Number



Conductivity Sensor, Flow-thru for Mark 25, 0-100 uS/cm


Conductivity Sensor, Flow-thru for Mark 25, 0-1000 uS/cm

NOTE: All prices FOB Factory. Consult the factory for specific warranty information. Warranty subject to certain conditions. Specifications and prices subject to change without prior notice. 


The conductivity sensor is meant to be used with the Mark 25 Water Quality Analyzers which is ideal for the following applications:

- Nuclear and Fossil Fuel Power Generation
- Condensate polishing Systems and Demineralizers
- Semiconductor Fabrication
- Pharmaceutical Manufacturing plants
- Other Industrial applications where ultrapure water monitoring is essential

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