pH electrodes, IoLine

pH electrodes for the most demanding measuring tasks. The IoLine electrode family with iodine/iodide reference system has been developed to meet the most demanding laboratory measurement tasks. These electrodes are metal ion free and hence ideally suited for measurements that may cause sample contamination by such ions (e.g. silver ions) and for pH measurements in Tris buffers too. Advantages of IoLine Electrodes over classical Ag/AgCl reference systems are notably by:
  • longer service life thanks to a patented three-chambers Iodine reservoir in the reference electrode.
  • fast reaction, precise measurement and clearly improved stability of measurement values, especially with changing temperatures or at temperatures other than the calibration temperature. This is due to the lower temperature sensitivity of the iodine/iodide reference potential.
  • free choice of the bridge electrolyte, hence optimum adaptation to the sample by double electrolyte system.

The electrodes are available in different membrane glass shapes and types and with different plugs to ensure that the user gets the instrument best suited to his needs. ID versions are available for use with Schott Instruments' ProLab line of high-end laboratory meters.
IoLine electrodes are the right choice for the most critical pH measurements in research and quality control in pharmacy, biotechnology or food industry.
Temp. range-5 to +100°C
pH range0 to 14
Zero pointpH = 7.00 ±0.25
Length / diam.
IL-pHT-A 120:
IL-pHT-A 170:

120mm / 12mm
170mm / 12mm
Shaft materialGlass
Reference system:Iodine/Iodide
Membrane shape:Sphere
Membrane resistance at 25°C:200MΩ
pH electrodes, IoLine Heco-Catalogue

pH electrodes, IoLine
PKCat. No.Manuf. Prod. No.
IL-MICRO-pH-A-DINpH electrode13016.241 329285113930
IL-pHT-H120MF-DIN-NpH electrode12016.251 535285113870
A 7771 T100 VPpH combination electrode with screw plug head12016.263 925285114800
IL-pH-A120-DINpH electrode12016.281 048285113820
IL-pHT-H170MF-DIN-NpH electrode17016.282 365285114240
PL A-91-225 pHT VPpH electrode with with screw plug head, Pt100022516.284 096285114535
IL-pHT-A120MF-R-NNpH electrode12016.284 133285114390
SL 83-120 NMSNpH electrode with memosens screw plug head ATEX II 1 / G, NTC 30K12016.286 075285114025
9501/85pH glass electrode, Ag/AgCl-reference system12017.059 751285114859
IL-MICRO-pHT-A-BNC-NpH electrode, Pt100013017.500 008285114310
IL-MICRO-pH-ApH electrode13017.638 746285114280
IL-MICRO-pHT-A-DIN-NpH electrode13017.654 536285114300
A7781-120 NMSNpH electrode with Memosens-screw plug head and NTC 30K12017.660 615285114765
IL-pHT-A 120-MFpH electrode with plug head12019.041 163285114140
IL-pH-A170MFpH electrode with plug head17019.041 164285114180
IL-pH-A120MF-DINpH electrode12019.041 165285113810
IL-pHT-A 120-MF-DIN NpH electrode with ID funct., Pt100012019.041 166285113890
IL-pHT-A 170-MF-DIN NpH electrode with ID funct., Pt100017019.041 167285113910
Cable combinations, LB 1 A and LB 1 BNC