Hanna Calcium Half-Cell Ion-Selective Electrode (ISE) - HI4004

The HI4004 Calcium Ion-Selective Electrode (ISE) Half-Cell is engineered for accurate and selective measurement of calcium ions (Ca²⁺) in a variety of solutions. This sensor features a robust PVC (polyvinyl chloride) membrane incorporating an organic ion exchanger, delivering reliable potential changes based on calcium ion exchange across the membrane and sample. Internal sensing elements are enclosed in a durable epoxy body, ensuring longevity and stable readings in demanding laboratory and industrial environments.

This half-cell is compatible with the HI5315 reference half-cell and is supplied with a coaxial 1 m (3.3 ft) cable and BNC connector. The operating range supports Ca²⁺ concentrations from as low as 0.12 mg/L (3 × 10^-6 M) up to 40,080 mg/L (1.0 M), offering flexibility for low and high-level calcium detection. Optimal performance is achieved in samples with pH values between 4 and 10 and in temperatures ranging from 0 to 40 °C. The electrode provides an approximate slope of +28 mV/decade change in concentration, ensuring repeatable sensitivity.

• PVC liquid membrane provides selectivity for calcium ions in complex matrices.
• 12 mm outer diameter and 120 mm overall length fit standard laboratory setups.
• Use cases include water analysis, quality monitoring in the food and beverage industry, and environmental testing.
• For use exclusively with a suitable reference (HI5315 or compatible) for complete operation.

With industry compliance and robust construction, the HI4004 Calcium ISE Half-Cell is an essential tool for laboratories, water treatment facilities, and food manufacturers seeking accurate calcium ion quantification. For similar sensors and laboratory accessories, explore the Ion Selective Electrode category on EnvMart.