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Vernier Go Direct Potassium Ion-Selective Electrode

Order code: GDX-K
Purchase QTY: (Each)1+    
Scientrific's price  $625.00    
Note: Prices do NOT include GST or freight

Vernier's Go Direct Potassium Ion-Selective Electrode (ISE) can be used to measure the concentration of potassium (K+) ions in aqueous solutions. It connects via Bluetooth® wireless technology or wired via USB to your device.

The versatile BNC connector allows students to easily replace the electrode when it expires or becomes damaged. You need only replace the electrode and not the entire sensor—lowering your overall equipment costs.

The Vernier Go Direct Potassium Ion-Selective Electrode has a combination-style, non-refillable, gel-filled electrode. Like all other PVC ISE membranes, the membrane on the ISE has a limited life expectancy. However, the replaceable module of ISE allows you to simply discard the used membrane module and replace it with a new one.

NOTE: Please allow 4 to 6 weeks for delivery from the date of your order as we only import this product as required due to its finite shelf life. We recommend that you do not purchase ISE replacement modules too far in advance of their expected time of use as degradation occurs while they are stored on the shelf.

Important: Ion-Selective Electrodes require good chemical technique and careful calibration to obtain accurate results; they are not recommended for junior school or primary students.

Rechargeable Battery — Ready When You Are
The Vernier Go Direct™ robust rechargeable battery offers long battery life and provides always-ready operation. Monitor battery life directly from Vernier's free Graphical Analysis™ app Should the battery run low simply connect the sensor to the charging cable and keep on collecting — no interruptions or inconvenience to you or your students.

Wired or Wireless — The Flexibility to Choose
Vernier's Go Direct™ sensors connect directly to your mobile device, Chromebook or computer using Vernier's free Graphical Analysis™ app. No additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth allowing you to choose the solution best for your classroom or laboratory.

GAPRO Vernier Graphical Analysis™ Pro includes all the features of the free Vernier Graphical Analysis app, plus enhanced functions for more advanced analysis. Its illustrative experiment videos and interactive graphing capabilities inspire students to explore crucial scientific concepts and analyze data in new complex and insightful ways.
GAPRO is compatible with most Vernier sensors and multiple operating systems and devices.

• Range (mV): ±1000mV
• Range (concentration): 1 to 39,000mg/L (or ppm)
• Accuracy: ±10% of full scale (calibrated 10 to 1000 mg/L)
• Interfering ions: Cs+, NH4+, H+, Ag+, Li+, Na+
• pH range: 2–12 (no pH compensation)
• Temperature range: 0–40°C (no temperature compensation)
• Electrode slope: 56 ±3mV/decade at 25°C
• Electrode resistance: 100 to 200kΩ
• Minimum sample size: must be submerged 28mm
• Connections:
     Wireless: Bluetooth
     Wired: USB

• Vernier Go Direct ISE Amplifier attached to a Potassium Ion-Selective Electrode BNC
• Micro USB cable
• 30mL bottle of High Standard solution with SDS (1000mg/L K+)
• 30mL bottle of Low Standard solution with SDS (10mg/L K+)
• Short-Term ISE Soaking Bottle

Educational use only:
Vernier and Kidwind products are designed for educational use. They are not appropriate for industrial, medical or commercial applications. Details

  • Warranty: 5 years (1 year on battery; no warranty for electrodes)
    • Package size (HxWxD): 70 x 102 x 311mm
    • Packed weight: 360g

      Last edited 19th May 2022

      This product is used in teaching these Australian Curriculum codes:
      ACSCH030 - Chemical fundamentals - Properties and structure of materials - Ions are atoms or groups of atoms that are electrically charged due to an imbalance in the number of electrons and protons; ions are represented by formulae which include the number of constituent atoms and the charge of the ion (for example, O2–, SO42–)
      ACSCH032 - Chemical fundamentals - Properties and structure of materials - The characteristic properties of metals (for example, malleability, thermal conductivity, electrical conductivity) are explained by modelling metallic bonding as a regular arrangement of positive ions (cations) made stable by electrostatic forces of attra
      ACSCH031 - Chemical fundamentals - Properties and structure of materials - The properties of ionic compounds (for example, high melting point, brittleness, ability to conduct electricity when liquid or in solution) are explained by modelling ionic bonding as ions arranged in a crystalline lattice structure with forces of attract
      ACSSU176 - Biological Sciences - Ecology - Ecosystems consist of communities of interdependent organisms and abiotic components of the environment; matter and energy flow through these systems

      Click a curriculum code to see other products that relate.

      Accessories / Spare Parts:From
      GDX-ISEA - Vernier Go Direct Ion-Selective Electrode Amplifier $174.00
      BTL-ES - Vernier Electrode Storage Bottles $33.00
      GDX-NO3-BNC - Vernier Go Direct Nitrate Ion-Selective Electrode BNC $532.00
      GDX-NH4-BNC - Vernier Go Direct Ammonium Ion-Selective Electrode BNC $532.00
      GDX-K-BNC - Vernier Go Direct Potassium Ion-Selective Electrode BNC $525.00
      GDX-CA-BNC - Vernier Go Direct Calcium Ion-Selective Electrode BNC $525.00
      GDX-CL-BNC - Vernier Go Direct Chloride Ion-Selective Electrode BNC $525.00
      GDX-BAT-300 - Vernier Go Direct 300mAH Replacement Battery $23.00
      K-HST - Vernier ISE Potassium High Standard $45.00
      K-LST - Vernier ISE Potassium Low Standard $45.00
      Works with:From
      GA4 - Vernier Graphical Analysis$0.00
      Similar Products:From
      GDX-NH4 - Vernier Go Direct Ammonium Ion-Selective Electrode$625.00
      GDX-CA - Vernier Go Direct Calcium Ion-Selective Electrode$625.00
      GDX-CL - Vernier Go Direct Chloride Ion-Selective Electrode$625.00
      GDX-NO3 - Vernier Go Direct Nitrate Ion-Selective Electrode$625.00
      K-BTA - Vernier Potassium Ion-Selective Electrode$597.00
      K-BNC - Vernier Potassium Ion-Selective Electrode BNC$550.00

      CatalogueVernier Catalogue K-12
      CatalogueVernier Catalogue Uni
      User ManualGetting Started - Connecting your sensor (External Link)
      User ManualVernier Go Direct Potassium Ion-Selective Electrode

      Note: Prices do NOT include GST or freight