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The Potassium Ion-Selective Electrode is fully supported with LabQuest 2, a standalone data logger with built-in graphing and analysis software.
Learn more about LabQuest 2 »
Product Description
£259.00 ex VAT | £310.80 Inc VAT
The Potassium Ion-Selective Electrode makes the measure of potassium ions portable. When used with a Vernier LabQuest 2, the Potassium ISE can be used to take readings in the field at lakes or streams. This sensor is easier to set up and use than other methods of measuring potassium ion concentration in aqueous solutions. Because it is a stick-style sensor, its use is similar to using a conductivity probe or a pH sensor in a laboratory setting or in the field.
Ion-Selective Electrodes require good chemical technique and careful calibration to obtain accurate results. They are not recommended for middle school or elementary students.
We recommend that you do not purchase Potassium Ion-Selective Electrode replacement modules too far in advance of their expected time of use; degradation occurs while replacement modules are stored on the shelf.
Available to Order
Email to a friendExperiments
Experiments Include:-
Measuring Potassium in Commercial Products
Measuring Potassium in Foods
What's Included
- Vernier Potassium Ion-Selective Electrode
- 30 mL bottle of High Standard Standard (1000 mg/L)
- 30 mL bottle of Low Standard Standard (10 mg/L)
- ISE soaking bottle (empty bottle with insertion cap)
- User manual
Specification
- Range: 90 – 39,000 mg/L (or parts per million)
- pH Range: 2 to 12
- Interfering Ions: Rb2+, Cs2+, NH4+, Ca2+, Mg2+, Li+
- Temperature Range: 0 – 40°C (not compensated)
- Electrode Resistance: >50 mΩ
- Electrode Slope: 56 +/- 4 mV/decade at 25°C
- Calibration Voltage (typical): 2.7 V (1000 ppm), 1.9 V (10 ppm)
- Reproducibility (precision): +/- 11% of full scale
- Minimum sample size: 3 mL in a 50 mL beaker
- Accuracy: +/- 16% of full scale
Sensor Requirements
The Potassium Ion-Selective Electrode may require a compatible interface and software. Choose a platform below to see compatible interface and software options.
| Interface | Software | ||
|---|---|---|---|
| Graphical Analysis 4 for Computers | Logger Pro | Logger Lite | |
| LabQuest Mini | Full support | Full support | Full support |
| LabQuest 2 | Full support | Full support | Full support |
| LabQuest Stream | Full support1 | Full support1 | Full support1 |
| Go!Link | Full support | Full support | Full support |
| Original LabQuest (DISCONTINUED) | Full support | Full support | Full support |
| LabPro (DISCONTINUED) | Incompatible | Full support | Full support |
COMPATIBILITY NOTES
- Connect LabQuest Stream via USB. Future software updates will support connection via Bluetooth®technology
- A computer with a compatible Bluetooth® 4.0 radio is required. Only computers running Windows 10 or Mac OS X 10.10 or newer are supported.
| Interface | Software Graphical Analysis 4 for Chrome |
|---|---|
| LabQuest Mini | Full support |
| LabQuest 2 | Full support |
| LabQuest Stream | Full support1 |
| Go!Link | Full support |
| Original LabQuest (DISCONTINUED) | Full support |
COMPATIBILITY NOTES
- Connect LabQuest Stream via USB. Future software updates will support connection via Bluetooth®technology
| Software | ||
|---|---|---|
| Interface | Graphical Analysis for iOS | Graphical Analysis for Android |
| LabQuest Stream | Future support | Future support |
| LabQuest 2 | Full support1 | Full support1 |
| Go Wireless Link | Future support | Future support |
COMPATIBILITY NOTES
- Mobile devices can only connect to LabQuest 2 via Wireless Data Sharing.
Ideal Solutions for Enquiry Based Learning
5 Year Warranty on most items
Award Winning Products
Connectivity with iOS, Mac, Android, Windows and Chromebooks
Guaranteed Quality and Support
Extensive Support Materials
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