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 Combination Ion-Selective Electrode (ISE) - HI4104

$2,060.06


Prices include GST. Not all items are in stock. Call 03 9769 0666 to confirm.

The HI4104 is a liquid membrane, combination ion selective electrode (ISE) for the determination of calcium (Ca2+) in solution. The PVC membrane comprised with organic ion exchanger produces a potential change due to the calcium ion exchange between the organic polymer membrane and the sample. The internal sensing elements are housed within a durable polyetherimide (PEI) body.

The HI4104 is ideal for a variety of applications in the food and beverage industry and water analysis.

  • Liquid membrane sensor
  • Skirted cone geometry
  • Detection from 0.12 to 40, 080 mg/L Ca2+

The HI4104 calcium ion selective electrode is a complete potentiometric cell that contains a silver/silver chloride (Ag/AgCl) reference housed within a PEI plastic body with a potassium chloride electrolyte. The internal elements are isolated from the sample by an organic polymer sensing membrane.

Hanna’s liquid membrane combination ISEs are designed with 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 HI4104 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 HI4104 calcium liquid membrane ISE can measure from 3µM (0.12 mg/L) to 1M (40, 080 mg/L).

Conversion Table for Ca2+

Multiply
moles/L (M) to ppm (mg/L) 40080
ppm (mg/L) to M (moles/L) 2.49 x 10-5

Features at-a-glance

Replaceable Sensing Modules – Combination liquid membrane ISEs are electrodes that detect free ions in a solution. This type of ISE is designed to incorporate easy replacement of the sensing module.

Durable PEI Body – The probe body is composed of durable polyetherimide (PEI) plastic.

BNC Connection – The HI4104 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.

 

Theory of Operation

A liquid membrane ion selective electrode develops a voltage due to the ion exchange that occurs between the solution and the polymer membrane that contains organic ion exchange resin. When the ionic strength of the solution is fixed by the addition of ISA, the voltage is proportional to the concentration of free ions in solution.

Specifications

SKU HI4104
Name Calcium Combination Ion-Selective Electrode (ISE) - HI4104
Description combination
Measurement Range calcium (Ca2+) 1.0M to 3 10-6M, 40,080 to 0.12 mg/L (ppm)
Temperature Range 0 to 40 °C
Body Material PEI/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

Purchase & Shipping

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 on orders over $150, typically arriving within 5 to 7 days. Delivery times may vary depending on the courier service and the recipient's location. Free shipping is not available with other offers or discounts.

Same-day despatch: Place your order before 1 PM Monday to Friday for same-day despatch (leaves our warehouse). Delivery times may vary depending on the courier service and the recipient's location. Subject to stock availability.

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

Additional information

Weight 0.45 kg
Parameter

Calcium

Temperature Range

0 to 40 °C