Product Overview

The HI4008 is a solid-state, half-cell ion-selective electrode (ISE) for determining copper ions (Cu2+) in solution. The mixed copper sulfide/silver sulfide sensing particles produce a change in potential due to the exchange of copper ions between the inorganic pellet membrane and the sample. The internal sensing element is housed in a durable epoxy body. The HI4008 is ideal for a variety of applications in electroplating, wastewater, and industrial processes.

The HI4008 copper ion-selective electrode is a potentiometric half-cell sensor mounted in an epoxy body. The internal element is isolated from the sample by a compressed copper sulfide/silver sulfide sensing membrane. This solid-state sensor requires a separate reference electrode to complete the measurement system.

Key Features

• Solid-state sensor
• Detection from 0.065 to 6355 mg/L Cu2+
• Used with the HI5315 reference half-cell
• Fixed sensing module: A solid-state half-cell ISE is an electrode that detects free ions in solution. The highly insoluble, compressed sensing particles are attached to the HI4008 copper half-cell through a fixed sensing module for ease of use.
• Durable epoxy body: The probe body of the copper half-cell ISE is made of durable epoxy.
• BNC connection: The HI4008 has a universal BNC connector that easily connects to any benchtop meter with a female BNC probe input.
• Theory of operation: Solid-state sensor electrodes generate a voltage due to ion exchange occurring between the solution and the inorganic membrane. Because the solubility of the membrane material in the sample is very limited, an equilibrium is established. When the ionic strength of the solution is fixed by adding ISA, the voltage is proportional to the concentration of free ions in solution.

Usage Notes

Hanna's solid-state half-cell ISEs are designed for use with the HI5315 reference half-cell. The reference half-cell has a cone connection. The skirt cone geometry of the reference forms a liquid junction with the test solution at the tip of the connection cone, producing a highly stable reference potential and consistent electrolyte flow into the solution. The electrolyte fill solution can be easily emptied and replaced when necessary by simply pressing lightly on the top of the ISE.

For the HI4008 to measure copper ions accurately, it is important to adjust the ionic strength of both the standards and the samples to a high, constant value with HI4000-00 ionic strength adjuster (ISA) solution. The ISA ensures a constant activity coefficient so that the concentration of free copper ions can be measured. Measuring all solutions at a constant ionic strength reduces errors between measurements. The HI4008 copper solid-state ISE has a measurement range of 1µM (0.065 mg/L) to 0.1M (6355 mg/L).

Specifications

Cu2+ Conversion Table