Chloride Ion-Selective Electrode
Recommended for College and High School. Interface and software sold separately.
The Chloride Ion-Selective Electrode is used to measure the concentration of Chloride (Cl-) in aqueous samples.
Description
The concentration of the Chloride ion gives a quick measurement of salinity of water samples. Use the Chloride ISE to measure chloride levels in ocean saltwater or salt in food samples.
The Chloride ISE has a combination-style, non-refillable, gel-filled electrode. Unlike other ISEs available from Vernier, the Chloride ISE has a solid-state membrane that does not need to be replaced.
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: 1.8 to 35,500 mg/L or ppm (5 × 10-5 M to 1.0 M)
-
Resolution (LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro):
- % of reading: 0.7%
- Low scale reading: 1.8 ±0.013
- High scale reading: 35,500 ±250 mg/L
- pH Range: 2 to 12
- Interfering Ions: CN-, Br-, I-, S2-
- Electrode Slope (log voltage vs. concentration): –56 mV/decade
- Electrode Resistance: 1 to 4 MΩ
- Reproducibility: ± 5% of reading
- Temperature range (can be placed in): 0 to 50°C (no temperature compensation)
- Minimum immersion: 1 inch
- Electrode Length: 155 mm
- Body Diameter: 12 mm
- Cap Diameter: 16 mm
- Cable Length: 100 cm
Experiments and Lab Ideas

Water Quality with Vernier (1)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Lab Ideas and Innovative Uses
What’s Included
- Vernier Chloride Ion-Selective Electrode
- 30 mL bottle of Chloride Low Standard (10 mg/L)
- 30 mL bottle of Chloride High Standard (1000 mg/L)
- Short-term ISE soaking bottle
- User manual
Sensor Requirements
The Chloride Ion-Selective Electrode requires a compatible interface and software to collect data. Interface and software sold separately. Getting started with probeware »
Compatible Interfaces
The Chloride Ion-Selective Electrode is compatible with these interfaces:
Ordering Information
Related Products
Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »




