Home > Calcium Half-Cell Ion Selective Electrode with Polymer Membrane - IC-HI4004
Hanna Instruments

Calcium Half-Cell Ion Selective Electrode with Polymer Membrane - IC-HI4004

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Product code: IC-HI4004

Backorder Now, once ordered your item will dispatch before the 06th of June 2025, call 1300 737 871 (NZ 0800 737 871 to confirm).

The HI4004 is a liquid membrane, half-cell ion selective electrode (ISE) for the determination of calcium (Ca2+) in solution. It is ideal for a variety of applications in the food and beverage industry and water analysis.

  • - Detection from 0.12 to 40,080 mg/L Ca2+
  • - For use with HI5315 reference half-cell

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$1,718.42 AUD + GST
 $1,890.27 AUD Inc. GST
The HI4004 calcium ion selective electrode is a potentiometric half-cell sensor housed within an epoxy body. The internal elements are isolated from the sample by an organic polymer sensing PVC membrane. This liquid membrane sensor requires a separate reference electrode to complete the measurement system.
Hannas liquid membrane half-cell ISEs are designed for use with the HI5315 reference half-cell. The reference half-cell features a cone style junction. The skirted cone geometry of the sensor forms the liquid junction with the test solution at the tip of the junction cone, producing a highly stable reference potential and consistent flow rates of electrolyte into the solution. A simple press of the top portion of the ISE makes it easy to empty the electrolyte fill solution and replace when necessary.
For the HI4004 to measure calcium accurately, it is important that the ionic strength of the standards and sample be adjusted to a high and constant value with the calcium ionic strength adjuster (ISA) solution. The ISA ensures that the activity coefficient is constant so the concentration of free calcium ions can be measured. Measuring all solutions with a constant ionic strength reduces the margin of error between measurements. The HI4004 calcium liquid membrane ISE can measure from 3uM (0.12 mg/L) to 1M (40,080 mg/L).
HI4004 Features
- Replaceable Sensing Modules: Half-cell liquid membrane ISEs are electrodes that detect free ions in a solution. The HI4004 calcium half-cell ISE is designed to incorporate easy replacement of the sensing module.
- Durable Epoxy Body: The probe body of the calcium half-cell ISE is composed of durable epoxy resin.
- BNC Connection: The HI4004 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.

Specifications

Description
polymer membrane; half-cell
Measurement Range
Calcium (Ca2+) 1.0M to 310-6M, 40,080 to 0.12 mg/L (ppm)
Temperature Range
0 to 40 C
Body Material
epoxy, PVC
Optimum pH Range
pH 4 to 10
Body Length/Overall Length
120 mm
Outer Diameter
12 mm
Cable
coaxial; 1 m (3.3)
Connector Type
BNC
Notes
Approximate Slope +28 mV

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