Ion Selective Electrodes

A result of years of research and product development, the Ionode range of Ion Selective Electrodes are the benchmark in price and performance for specialist applications, demanding laboratory environments and OEM solutions. The Ionode range of ISE's include fluoride, chloride, bromide, iodide, cyanide, silver/sulphide and ammonia, all with renowned Ionode performance.

For ion specific measurements of fluoride, cyanide, bromide, iodide, chloride, silver sulphide, ammonia and more, Ionode ISE’s are hand-crafted to the highest possible standards for reliability and accuracy and represent outstanding value for money when compared to equivalent competitors products. Contact Ionode about your special needs..

Click here for an in depth explanation of Ion Selective Sensor Theory.

The ISE Range

Model Parameter Measuring Range Temp. Range pH Range Main Interferences Slope
IJ-F F- 0.2 - 19,000 ppm 0 - 60 5 - 7 OH- 57mV/decade ± 3mV
IJ-Ag2S S2-
0.003 - 32,000 ppm
0 - 60 2 - 8 Hg+/2+ 27mV/decade ± 3mV
Ag+ 0.01 - 108,000 ppm >11 57mV/decade ± 3mV
IJ-Cl Cl- 1.8 - 35,500 ppm 0 - 60 2 - 12 Br-, I-, S2-, CN-, S2O32- 57mV/decade ± 3mV
IJ-Br Br- 0.2 - 79,900 ppm 0 - 60 2 - 12 I-, S2-, CN- 57mV/decade ± 3mV
IJ-I I- 0.005 - 127,000 ppm 0 - 60 2 - 12 S2-, CN- 57mV/decade ± 3mV
IJ-CN CN 0.2 - 260,000 ppm 0 - 60 9 - 14 S2-, I- 57mV/decade ± 3mV
ISE-Nitrate NO3- 0.2 - 14,000 ppm 0 - 40 2.5 - 11 HS-, HCO3-, CO32-, H2PO4-, Cl-, Br-, I-, ClO4-, ClO3-, CN-, NO2- 57mV/decade ± 3mV
ISE-Potassium K+ 0.4 - 39,000 ppm 0 - 40 2.5 - 11 Cs+, NH4+, Tl+, H+ 57mV/decade ± 3mV
ISE-Calcium Ca2+ 0.1 - 40,000 ppm 0 - 40 2.5 - 11 Pb2+, Hg2+, H+, Sr2+, Fe2+, Cu2+, Ni2+, NH4+ 25mV/decade ± 3mV
ISE-Surfactant Surfactant 10 ppm 0 - 40 2 - 12 Organic anions, Cations which resembles the species of interest 57mV/decade ± 3mV
ISE-Hardness Hardness 0.5 ppm 0 - 40 5 - 10 Zn+2, Fe+2, Cu+2, Ni+2 25mV/decade ± 3 mV

Gas sensing electrodes

Model Parameter Measuring Range Temp. Range pH Range Main Interferences Slope
ISE-Ammonia NH3 1.7 - 17,000 ppm 0 - 45 >11 Volatile amines 57mV/decade ± 3mV
ISE-Oxygen O2 0 -100% 0 - 45 57mV/decade ± 3mV