These pH glass electrodes are designed for applications with low conductivity and a high risk of poisoning. By separating the pH and reference electrodes, only the pH electrode needs to be replaced, helping to reduce operating costs while extending the service life of the reference electrode.
pH glass electrodes without electrolyte
In these measuring systems, the reference electrode is installed separately from the pH electrode. This arrangement is particularly advantageous in applications where the pH-sensitive glass electrode requires more frequent replacement than the reference electrode.
Variants with S glass are suitable for applications involving temperature shocks and high pH values. Different membrane types are available to optimize performance for specific process conditions.
- Ideal for low conductivity media and risk of poisoning
- Reduced operating costs through separate reference electrode
- S glass versions for temperature jumps and high pH values
The pH glass electrodes without electrolyte feature a glass shaft (12 mm diameter), Ag/AgCl reference system and a screw plug head or fixed cable, with variants available in different glass types, membrane designs and measuring ranges.
Models:
The temperature must be measured using a separate resistance thermometer and the corresponding reference electrodes must be installed separately.
- S 1181 HD – S glass, sphere membrane, 1...14 pH, 0...+135 °C, length 120 mm
- S 2781 HD – S glass, dome membrane, 2...14 pH, +10...+135 °C, length 120 mm
- H 1181 HD – H glass, sphere membrane, 1...14 pH, 0...+135 °C, length 120 mm
- L 1181 HD – A glass, sphere membrane, 1...14 pH, 0...+135 °C, length 120 mm
- H 1171 HD – H glass, sphere membrane, zero point pH 4.6, 1...14 pH, 0...+135 °C, length 120 mm
- 9501/85 – H glass, sphere membrane, 5 m fixed cable with free end, 0...14 pH, 0...+135 °C, length 120 mm
The temperature must be measured using a separate resistance thermometer – see product page.
Suitable reference electrodes can be found here – see product page.
Other pH electrodes
Electrodes including temperature measurement are also available with:
- Pt100 – see product page
- Pt1000 – see product page
- Memosens – see product page
Electrodes without temperature measurement are also available with liquid or KCl electrolyte – see product page.
Electrodes without temperature measurement are also available with gel or polymer electrolyte – see product page.