Cadmium Combination Ion Selective Electrode (ISE) - HI4103
The HI4103 is a solid state, combination ion selective electrode (ISE) for the determination of cadmium (Cd2+) in solution. The mixed cadmium sulfide/silver sulfide sensing pellet produces a potential change due to the cadmium ion exchange between the inorganic pellet membrane and the sample. The internal sensing elements are housed within a durable polyetherimide (PEI) body. The HI4103 is ideal for a variety of applications in electroplating, battery construction, and in the laboratory.
- Solid state sensor
- Skirted cone geometry
- Detection from 0.01 to 11,200 mg/L Cd2+
The HI4103 cadmium ion selective electrode is a complete potentiometric cell that contains a silver/silver chloride (Ag/AgCl) reference housed within a PEI plastic body with a potassium nitrate electrolyte. The internal elements are isolated from the sample by a compressed cadmium sulfide/silver sulfide sensing membrane.
Conversion Table for Cd2+
moles/L (M) to ppm (mg/L)
ppm (mg/L) to M (moles/L)
Fixed Sensing Modules
- Combination solid-state ISEs are electrodes that detect free ions in a solution. The highly insoluble, compressed sensing pellet is attached to the electrode by a fixed sensing module for ease of use.
Durable PEI Body
- The probe body is composed of durable polyetherimide (PEI) plastic.
- The HI4103 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.
Theory of OperationA solid-state sensor electrode develops a voltage due to the ion exchange that occurs between the solution and the inorganic membrane. An equilibrium occurs due to the highly limited solubility of the membrane material in the sample. When the ionic strength of the solution is fixed by the addition of ISA, the voltage is proportional to the concentration of free ions in solution.
|Type||solid state; combination|
|Optimum pH Range||2 to 12|
|Temperature Range||0 to 80°C|
|Cable||1 m coaxial|
|Common Applications||electroplating, battery construction, laboratory and as an indicator for titrations|