You are using a version of Internet Explorer (version 8 and / or older) or the compatibility mode, which does not support some functionalities of the site you're viewing. This page can be displayed correctly you therefore may not. In order to use the full functionality of the site is a current Internet Explorer or another browser (eg: Google Chrome, Firefox) necessary.
HomeProductsProduct categoriesSensor technologyConventional sensors (lab) > Galvanic oxygen sensors (field use)

DurOx® galvanic dissolved oxygen sensor (field use)

WTW conventional galvanic oxygen sensor (field) DurOx®

Robust, membrane-covered galvanic dissolved oxygen sensor for external use, especially in wastewater treatment systems and in the aqua culture, but also for training purposes

  • Suitable for field applications thanks to its robust design
  • Use in aqua cultures with the protective basket against bites (including in delivery)
  • Stable signal thanks to special membrane technology

Robust, membrane-covered galvanic dissolved oxygen sensor for applications in flowing waters, fish hatcheries, aeration basins and more fields. With screw-on protection. The special membranes achieve stable measured values, especially in the aeration basin and similar applications with strongly fluctuating oxygen content.


Model Description Order no.
DurOx® 325-3 robust field sensor. 3 m cable 201570

Technical Data

Measuring range oxygen 0 … 50 mg/l O2 concentration
0 … 600 % O2 saturation
0 … 1250 mbar O2 partial pressure
Measuring range temperature 0 … 50 ° C
T99 <125 s

Matching and supplemental products


Model Description Order no.
RL-G Cleaning solution for galvanic oxygen sensors StirrOx® G, CellOx® 325, DurOx® 325 and TA 197 Oxi, 1 bottle with 30 ml 205204
ELY/G Electrolyte for galvanic dissolved oxygen sensors StirrOx® G, CellOx® 325, DurOx® 325 and TA 197 Oxi, 1 bottle with 50 ml 205217
SK-D Protective basket for DurOx® sensors 201575
ZBK-D Accessories kit with replacement and maintenance parts for DurOx® sensors, 3 replacement membrane heads and electrolytes, cleaning solution, polishing strips 201578
OxiCal® -D Calibration container for DurOx® sensors 201579
WP3-D 3 replacement membrane heads for DurOx® sensors 202740


Are you interested
in signing up for the free
WTW newsletter?

WTW Newsletter Registration

Any Question?
We advise
you gladly!

WTW Contact