Hanna Instruments-4109 Cyanide Combination ISE Electrode

Hanna InstrumentsSKU: HI-4109
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Description

The Hanna Instruments-4109 is a solid state, combination ion selective electrode (ISE) for the determination of cyanide (CN-) in solution. The silver halide sensing pellet produces a potential change due to the cyanide ion exchange between the inorganic pellet membrane and the sample. The internal sensing elements are housed within a durable polyetherimide (PEI) body.


The Hanna Instruments-4109 is ideal for a variety of applications in plating, wastewater, and agriculture.


The Hanna Instruments-4109 is a Cyanide combination ISE. It is ideal to be used for the determination of free Cyanide ions in plating baths, waste water and in plant and soil samples.


The Hanna Instruments-4109 cyanide 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 nitrate electrolyte. The internal elements are isolated from the sample by a compressed silver halide sensing membrane.


Features



  • Solid state sensor

  • Skirted cone geometry

  • Detection from 0.026 to 260 mg/L CN-


Hanna’s solid state 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 Hanna Instruments-4109 to measure cyanide accurately, it is important that the ionic strength of the standards and sample be adjusted to a high and constant value with the cyanide ionic strength adjuster (ISA) solution. The alkaline ISA ensures that the activity coefficient is constant so the concentration of free cyanide ions can be measured. Measuring all solutions with a constant ionic strength reduces the margin of error between measurements. The Hanna Instruments-4109 cyanide solid state ISE can measure from 1µM (0.026 mg/L) to 0.01M (260 mg/L).

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