Home > Lead/Sulfate Half-Cell Ion Selective Electrode, Solid State - IC-HI4012
Hanna Instruments

Lead/Sulfate Half-Cell Ion Selective Electrode, Solid State - IC-HI4012

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Product code: IC-HI4012

Backorder Now, once ordered your item will dispatch before the 20th of May 2025, call 1300 737 871 (NZ 0800 737 871 to confirm).

The HI4012 is a solid state, half-cell ion selective electrode (ISE) for the determination of lead (Pb2+) in solution and indicator for sulfate in titrations. It  is ideal for a variety of applications in the plating industry and environmental monitoring.

  • - Solid state sensor
  • - Detection from 0.21 to 20,700 mg/L Pb2+
  • - For use with HI5315 reference half-cell

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$1,800.75 AUD + GST
 $1,980.83 AUD Inc. GST
The HI4012 lead/sulfate selective electrode is a potentiometric half-cell sensor housed within an epoxy body. The internal elements are isolated from the sample by a compressed lead sulfide sensing membrane. This solid state sensor requires a separate reference electrode to complete the measurement system.
Hannas solid state 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 reference 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 HI4012 to measure lead accurately, it is important that the ionic strength of the standards and sample be adjusted to a high and constant value with the lead ionic strength adjuster (ISA) solution. The ISA ensures that the activity coefficient is constant so the concentration of free lead ions can be measured. Measuring all solutions with a constant ionic strength reduces the margin of error between measurements. The HI4012 lead/sulfate solid state ISE can measure from 1M (0.21 mg/L) to 0.1M (20,700 mg/L).
The HI4012 can also be used as an indicator to follow the progress and detect the endpoint of a precipitation titration of sulfate. During the titration, the lead/sulfate ISE follows the lead concentration while a lead perchlorate solution is used to titrate the sample. The lead in the titrant solution reacts with the sulfate ions present in the sample to form a precipitate. Once all of the lead and sulfate ions have reacted, a change in mV occurs to signal the endpoint, and ultimately the sulfate concentration
HI4012 Features
- Fixed Sensing Modules - Solid state half-cell ISEs are electrodes that detect free ions in a solution. The highly insoluble, compressed sensing pellet is attached to the HI4012 lead/sulfate half-cell by a fixed sensing module for ease of use.
- Durable Epoxy Body - The probe body of the chloride half-cell ISE is composed of durable epoxy resin.
- BNC Connection - The HI4011 has a universal BNC connector for easy connection to any benchtop meter with a female BNC probe input.

Specifications

Description
solid state; half-cell
Measurement Range
lead (Pb2+) 0.1M to 110-6M, 20,700 to 0.21 mg/L (ppm)
Temperature Range
0 to 80 C
Body Material
epoxy
Optimum pH Range
pH 4 to 7
Body Length/Overall Length
120 mm
Outer Diameter
12 mm
Cable
coaxial; 1 m (3.3)
Connector Type
BNC
Notes
Approximate Slope +27 mV

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