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.

ORP electrodes

Conventional ORP electrodes
WTW conventional ORP electrode SenTix® ORP
WTW conventional ORP electrode SenTix® Ag
WTW conventional ORP electrode SenTix® Au
WTW conventional ORP electrode SenTix® PtR

Platinum, gold or silver ORP electrodes - suitable for the most varied applications: strongly oxidizing solutions, argentometry and much more

  • Different metal electrodes to adapt to measured substance
  • Plug head electrodes for universal use
  • Ag/AgCl reference system

ORP electrodes deliver a sensitive voltage signal from reactions in aqueous solutions, where the reaction partners exchange charges on the metal surface of the electrode. The scale is comparable with that of pH measurement. Typical areas of use are the monitoring of the disinfection effect, the determination of ORP potentials in biochemical reactions, measuring in waters of different quality and more. The platinum electrodes can be used universally, the gold electrode is especially suited for strongly oxidizing media without the presence of chloride. The silver electrode is intended for argentometry.


Model Description Order no.
SenTix® ORP ORP electrode with platinum disc, S7 plug head 103648
SenTix® Ag Ag electrode for argentometry, S7 plug head 103664
SenTix® Au ORP electrode with Au sheath, S7 plug head 103665
SenTix® PtR ORP electrode, platinum disc, polymer electrolyte, S7 plug head 103666

Technical Data

SenTix® ORP Ag Au PtR
Working range °C 0 … 100 °C -5 … 100 °C -5 … 100 °C -5 … 100 °C
Sensor Platinum Silver Gold Platinum


Model Description Order no.
AS/DIN Connecting cable with DIN plug. For pH/ORP electrodes with plug head, 1 m cable 108110
AS/DIN - 3 Connecting cable with DIN plug. For pH/ORP electrodes with plug head, 3 m cable 108112
AS/BNC Connecting cable with BNC plug. For pH/ORP electrodes with plug head, 1 m cable 108114
D 3Sen Flow vessel for field measurements 903842


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

WTW Newsletter Registration

Any Question?
We advise
you gladly!

WTW Contact