Go Direct® Potassium Ion-Selective Electrode

Go Direct® Potassium Ion-Selective Electrode

Go Direct® Potassium Ion-Selective Electrode

$249.00

The 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 via USB to your device.

ORDER CODE: GDX-K Categories ,

Use the Go Direct Potassium Ion-Selective Electrode to wirelessly measure levels of potassium ions.

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 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.

Rechargeable Battery—Ready When You Are

The robust rechargeable battery offers long battery life and provides always-ready operation when using the sensor wirelessly. Monitor battery life directly from our free Vernier Graphical Analysis™ app, as well as Graphical Analysis Pro and LabQuest® 3. 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.

Wireless or Wired—The Flexibility to Choose

Our Go Direct sensors connect directly to your mobile device, Chromebook, or computer using our 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® wireless technology, allowing you to choose the solution best for your classroom or laboratory.

Note: 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 middle school or elementary students.

Specifications

  • Range (mV): ±1000 mV
  • Range (concentration): 1 to 39,000 mg/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 ±3 mV/decade at 25°C
  • Electrode resistance: 100 to 200 kΩ
  • Minimum sample size: must be submerged 2.8 cm (1.1 in)
  • Connections:
    • Wireless: Bluetooth
    • Wired: USB

Requirements

Choose a platform below to see its compatibility requirements.

LabQuest
InterfaceLabQuest App
LabQuest® 3Full support
LabQuest 2 (discontinued)Full support 1
LabQuest (discontinued)Incompatible

Compatibility Notes

  1. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Computers
Software
InterfaceGraphical Analysis App for Computers
Version 4.10
No interface requiredFull support 1
LabQuest® 3Full support 2 3
LabQuest 2 (discontinued)Full support 2 3

Compatibility Notes

  1. For Bluetooth® connectivity, only computers running Windows 10 or Mac OS X 10.10 or newer are supported. The computer must also have a compatible Bluetooth 4.0+ radio.
  2. Connect this sensor directly to a computer or Chromebook via a USB or wireless Bluetooth® connection for best results. Alternatively, this sensor is fully supported when used with LabQuest 2 or LabQuest 3 when the LabQuest is connected to a computer or Chromebook via Wireless Data Sharing.
  3. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Chromebook
Software
InterfaceGraphical Analysis App for Chrome
Version 4.10
No interface requiredFull support
LabQuest® 3Full support 1 2
LabQuest 2 (discontinued)Full support 1 2

Compatibility Notes

  1. Connect this sensor directly to a computer or Chromebook via a USB or wireless Bluetooth® connection for best results. Alternatively, this sensor is fully supported when used with LabQuest 2 or LabQuest 3 when the LabQuest is connected to a computer or Chromebook via Wireless Data Sharing.
  2. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
iOS
Software
InterfaceGraphical Analysis App for iOS
Version 4.10
Graphical Analysis GW for iOS
Version 4.0.6
No interface requiredFull supportFull support
LabQuest® 3Full support 1 2 3Full support 1 2 3
LabQuest 2 (discontinued)Full support 1 2 3Full support 1 2 3

Compatibility Notes

  1. Connect this sensor directly to a supported mobile device via a wireless Bluetooth® connection for best results.
  2. iOS and Android devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.
  3. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Android
Software
InterfaceGraphical Analysis App for Android
Version 4.10
Graphical Analysis GW for Android
Version 3.2
No interface requiredFull supportIncompatible
LabQuest® 3Full support 1 2 3Full support 1 2
LabQuest 2 (discontinued)Full support 1 2 3Full support 1 2

Compatibility Notes

  1. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
  2. iOS and Android devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.
  3. Connect this sensor directly to a supported mobile device via a wireless Bluetooth® connection for best results.
Python
Software
InterfacePython
No interface requiredFull support
Javascript
Software
InterfaceJavascript
No interface requiredFull support 1

Compatibility Notes

  1. A wireless Bluetooth® connection can be made with Go Direct sensors on any platform running a browser with WebBluetooth support. However, only a few operating systems have been tested and testing has been limited.
LabVIEW
Software
InterfaceNI LabVIEW

What's Included

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

Accessories

AccessoryOrder CodePriceQuantity
Go Direct® Charge StationGDX-CRG$69.00
Go Direct® Nitrate Ion-Selective Electrode BNCGDX-NO3-BNC$216.00
Go Direct® Ammonium Ion-Selective Electrode BNCGDX-NH4-BNC$216.00
Go Direct® Chloride Ion-Selective Electrode BNCGDX-CL-BNC$216.00
Go Direct® Calcium Ion-Selective Electrode BNCGDX-CA-BNC$216.00

Support

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

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