Hanna HI4004-51 Calcium Module for Half-Cell ISE
The Hanna HI4004-51 Calcium Module for Half-Cell ISE is a replacement calcium ion-selective sensor module designed for use with the HI4004 half-cell ISE body. This liquid membrane module utilizes an organic polymer embedded in a PVC matrix to selectively exchange calcium ions (Ca²⁺) with the sample solution, enabling precise electrochemical measurement of calcium ion activity.
Features
Selective Calcium Ion Sensing: The membrane’s organic polymer formulation within a PVC matrix ensures reliable and specific calcium ion exchange.
Quick and Easy Replacement: Designed to easily attach to the HI4004 half-cell electrode body, allowing for fast sensor renewal and minimal downtime.
Supports High Measurement Accuracy: Generates a charge imbalance in response to calcium ion activity, enabling accurate readings when used with a reference half-cell.
Conditioning Recommended: Pre-soaking the sensor in HI4004-45 conditioning solution or a 0.01M calcium standard (without ISA) enhances response stability and performance.
Extendable Shelf Life: Refrigeration of the module is recommended to maximize its usable life span.
Specifications
Product Type: Replacement calcium sensing module
Compatible Electrode: HI4004 Calcium Half-Cell ISE
Membrane Type: Liquid membrane with organic polymer in PVC matrix
Measurement Principle: Ion exchange and charge imbalance detection
Installation: Easily mounts on the HI4004 half-cell body
Storage Recommendation: Store refrigerated for extended lifespan
Applications
The HI4004-51 calcium module is ideal for:
Water quality testing for calcium hardness in drinking water, wastewater, or natural sources
Agricultural analysis of soil or nutrient solutions
Food and beverage testing, especially in dairy and mineral-rich products
Educational labs teaching ion-selective electrode technology
Research and industrial labs conducting high-precision calcium analysis
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