Hanna Instruments Australia
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Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm
Hanna Instruments Australia
Sales: (03) 9769 0666   |    Mon to Fri: 8:30am – 5:00pm

Calcium Module for Half-Cell ISE - HI4004-51

$543.31

The HI4004-51 is a replacement sensing module for the calcium half-cell ion selective electrode.

  • Calcium-sensitive polymer
  • Durable PVC matrix
  • Easy to replace

The HI4004-51 calcium module is for use with the HI4004 calcium half-cell ion selective electrode (ISE). The liquid membrane sensor contains an organic polymer within the inert PVC matrix that is responsible for exchange of calcium ions across the membrane. A charge imbalance develops between the sample and the internal cell in response to the calcium ion activity. The potential change is proportional to the concentration of ions in solution.

The HI4004-51 calcium half-cell module easily screws onto the HI4004 probe body, allowing for quick assemblage or replacement. Presoaking the calcium sensor in HI4004-45 conditioning solution or a calcium standard (0.01M) without ionic strength adjuster (ISA) for at least one half hour before calibration will help to optimize the sensor response. Refrigeration of the HI4004-51 calcium module will help extend its life.

SKU HI4004-51
Name Calcium Module for Half-Cell ISE – HI4004-51

Calcium Module for Half-Cell ISE – HI4004-51

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.


Free standard delivery:

We offer free delivery within Australia, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient’s location.


Same-day express delivery:

Place your order before 1 PM Monday to Friday for the same-day express shipping. Delivery times may vary depending on the courier service and the recipient’s location.

Please note that we do not offer shipping to PO Box addresses.

All prices are inclusive of GST and not all items are stock items, if you require an immediate solution please send an email to sales@hannainst.com.au or call us on (03) 9769 0666.

Please note that we do not offer shipping to PO Box addresses.