These pH combination electrodes are designed for applications with low conductivity, suspended solids, contamination-sensitive processes and media with a risk of electrode poisoning. Depending on the junction design, they are suitable for demanding process media, stable solutions or pure aqueous applications.
pH electrodes with liquid or KCl electrolyte
Electrodes with liquid electrolyte are particularly suitable for media with low conductivity, suspended solids or a risk of poisoning. The continuously replenished electrolyte helps maintain stable measurement conditions and minimizes the risk of clogging.
For applications with KCl electrolyte, different junction designs are available. A platinum junction provides excellent resistance to clogging, a ground joint junction is ideal for stable media and ensures long service life through controlled electrolyte outflow, while a ceramic junction is suited for pure aqueous media where minimum contamination is required.
- Suitable for low conductivity media and suspended solids
- Different junction designs for specific process requirements
- Reliable measurement with minimum contamination
The pH combination electrodes with liquid or KCl electrolyte feature a glass shaft (12 mm diameter) and a screw plug head, with variants available with platinum, ground joint or ceramic junctions as well as different electrolyte systems and glass types.
Models:
Electrodes with liquid electrolyte
The following models feature electrolyte L 200, Ag/AgCl reference system, refill tube, sphere membrane and a measuring range of 0...12 pH, -30...+80 °C:
- L 9080 – A glass, 3 x ceramic junction, length 120 mm
- L 9180 – L glass, ground joint junction, length 120 mm
Electrodes with KCl electrolyte
The following models feature KCl 3 mol/l electrolyte and Ag/AgCl reference system:
- H 6291 – platinum junction, H glass, length 120 mm, 1...14 pH, 0...+135 °C
- H 9180 – ground joint junction, H glass, length 120 mm, 1...14 pH, 0...+135 °C
- S 9180 – ground joint junction, S glass, length 120 mm, 2...14 pH, +10...+135 °C
- H 6281 – ceramic junction, H glass, length 120 mm, 1...14 pH, 0...+135 °C
- H 6381 – ceramic junction, H glass, length 320 mm, 1...14 pH, 0...+135 °C
- H 9080 – ceramic junction, H glass, length 120 mm, 1...14 pH, 0...+135 °C
- S 9080 – ceramic junction, S glass, length 120 mm, 2...14 pH, +10...+135 °C
- H 6181 HD – ceramic junction, H glass, length 170 mm, 0...14 pH, 0...+135 °C
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 gel or polymer electrolyte – see product page.
Electrodes without temperature measurement are also available without electrolyte – see product page.