Potassium (K+)

Parameter Selection

Application Importance of Measuring Potassium in Wine

In wine grapes, potassium plays an important role in determining the pH of juice and the stability of finished wine. As the potassium content in grapes increases, tartaric acid binds with potassium ions, forming potassium tartrate. Once saturated, potassium tartrate will precipitate, removing free acidity from juice. This results in a juice with decreased acidity and increased pH. Potassium uptake from the soil by the grapevine roots is accelerated in warm, dry climates. This causes the resulting grapes to typically have pH values above the ideal range of pH 3.0 to 3.8.

Wines and juice with pH values above pH 3.8 due to high potassium content may be adjusted by the addition of tartaric or malic acid. These adjustments will both lower the pH and raise the acidity, and are typically made in the juice before fermentation. Potassium can also naturally be lowered in grapes by limiting the availability of potassium to the vines or utilizing a blend of wine grapes to ensure an ideal balance of potassium, pH, and acidity.

Winemakers with a robust laboratory setting may use ion selective electrodes (ISEs) to understand the potassium concentration of their juice, must, or wine.

ISE Meters

HI5000 Series Research Grade Laboratory Benchtops

The HI5000 series is our most advanced benchtop meters incorporating the latest microprocessor to bring exceptional features and performance for the most demanding user. These meters are completely customizable to user specific requirements. These research grade meters have many features including:


  • Ion Selective Electrode (ISE) input that displays measurement in carious form of measurement units
  • Programmed incremental methods that guides the user in performing the operation
  • Large color LCD that is sharp and easy to read
  • Capacitive Touch Keypad that is easy to clean
  • Logging and USB connection for data management
  • Two models to choose from:
    • 2 channel pH/ISE
    • 2 channel pH/ISE and Conductivity/TDS
Shop Now >

HI5000 Series Research Grade Laboratory Benchtops

The HI5000 series is our most advanced benchtop meters incorporating the latest microprocessor to bring exceptional features and performance for the most demanding user. These meters are completely customizable to user specific requirements. These research grade meters have many features including:


  • Ion Selective Electrode (ISE) input that displays measurement in carious form of measurement units
  • Programmed incremental methods that guides the user in performing the operation
  • Large color LCD that is sharp and easy to read
  • Capacitive Touch Keypad that is easy to clean
  • Logging and USB connection for data management
  • Two models to choose from:
    • 2 channel pH/ISE
    • 2 channel pH/ISE and Conductivity/TDS
Shop Now >

Portable pH/ISE meters

Portable meters provide the versatility to bring the meter to the sample. For users that are looking for an advanced version of a portable pH/ISE meter we offer the HI98191 with the features and performance of a benchtop.


Professional Portable Meter Features:

  • GLP data for tracking calibration data
  • CAL Check Diagnostics
  • USB for data transfer
  • Choice of ISE concentration units
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Electrodes

Potassium ISE

HI4114 (combination) and HI4014 (half cell) Potassium Ion Selective Electrodes (ISEs) are polymer liquid membrane based sensors with a universal BNC connector. The HI4114 is a combination ISE that includes a reference cell while the HI4014 is a half cell that requires a separate reference half cell in order to use.


  • Polymer membrane
    • Carrier ionophore that is a lock and key fit for potassium
  • BNC connector
    • Universal connector that can be used with any meter that accepts a BNC connection
  • Double junction reference design
    • Required for specific fill solution to be used
  • Reference cell with skirted cone geometry
    • Provides a steady flow of electrolyte
    • Extremely stable reference potential required for ISE usage

Shop HI4114 >

Shop HI4014 >

Shop HI5315 >

Potassium ISE

HI4114 (combination) and HI4014 (half cell) Potassium Ion Selective Electrodes (ISEs) are polymer liquid membrane based sensors with a universal BNC connector. The HI4114 is a combination ISE that includes a reference cell while the HI4014 is a half cell that requires a separate reference half cell in order to use.


  • Polymer membrane
    • Carrier ionophore that is a lock and key fit for potassium
  • BNC connector
    • Universal connector that can be used with any meter that accepts a BNC connection
  • Double junction reference design
    • Required for specific fill solution to be used
  • Reference cell with skirted cone geometry
    • Provides a steady flow of electrolyte
    • Extremely stable reference potential required for ISE usage

shop K+ ISE >

Solutions & Accessories

Solutions and Accessories for Potassium ISE Measurement

Potassium ISE measurement require the use of an Ionic Strength Adjuster (ISA), calibration standard and reference fill solution. All solutions are produced by Hanna and not sourced from third parties in order to control quality and cost.


  • One stop source for all solutions required to perform a potassium ISE measurement
  • Additional accessories include replacement modules for potassium ISE and magnetic stirrer for sample consistency
  • Products produced to ISO 9001standards
  • Shop Now >

    Solutions and Accessories for Potassium ISE Measurement

    Potassium ISE measurement require the use of an Ionic Strength Adjuster (ISA), calibration standard and reference fill solution. All solutions are produced by Hanna and not sourced from third parties in order to control quality and cost.


  • One stop source for all solutions required to perform a potassium ISE measurement
  • Additional accessories include replacement modules for potassium ISE and magnetic stirrer for sample consistency
  • Products produced to ISO 9001standards
  • Shop Now >

    Resources

    Check out our Media Library and Knowledge Base pages specifically for wine and wine related products.