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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

Nitrate Half-Cell Ion Selective Electrode (ISE) - HI4013

$1,912.91

The HI4013 is a liquid membrane, half-cell ion selective electrode (ISE) for the determination of nitrate (NO3) in solution. The PVC membrane comprised with organic ion exchanger produces a potential change due to the nitrate ion exchange between the organic polymer membrane and the sample. The internal sensing elements are housed within a durable epoxy body.

The HI4013 is ideal for a variety of applications in the food industry, agriculture, and water analysis.

  • Liquid membrane sensor
  • Detection from 0.62 to 6, 200 mg/L NO3
  • For use with HI5315 reference half-cell

The HI4013 nitrate 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 membrane. This liquid membrane sensor requires a separate reference electrode to complete the measurement system.

Hanna’s 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 HI4013 to measure nitrate accurately, it is important that the ionic strength of the standards and sample be adjusted to a high and constant value with the nitrate ionic strength adjuster (ISA) solution. The ISA ensures that the activity coefficient is constant so the concentration of free nitrate ions can be measured. Measuring all solutions with a constant ionic strength reduces the margin of error between measurements. The HI4013 nitrate liquid membrane ISE can measure from 10µM (0.62 mg/L) to 0.1M (6, 200 mg/L).

Conversion Table for NO3

Multiply
moles/L (M) to ppm (mg/L) 62000
ppm (mg/L) to M (moles/L) 1.61 x 10-5

Features at-a-glance

Replaceable Sensing Modules – Half-cell 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 Epoxy Body – The probe body of the nitrate half-cell ISE is composed of durable epoxy resin.

BNC Connection – The HI4013 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.

SKU HI4013
Name Nitrate Half-Cell Ion Selective Electrode (ISE) – HI4013
Description polymer membrane; half-cell
Measurement Range nitrate (NO3-) 0.1M to 1 10-5M, 6,200 to 0.62 mg/L (ppm)
Temperature Range 0 to 40 °C
Body Material epoxy, PVC
Optimum pH Range pH 2 to 12
Body Length/Overall Length 120 mm
Outer Diameter 12 mm
Cable coaxial; 1 m (3.3’)
Connector Type BNC
Notes Approximate Slope -56 mV

Nitrate Half-Cell Ion Selective Electrode (ISE) – HI4013

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.