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Chloride Ion-Selective Electrode

The Chloride Ion-Selective Electrode (ISE) is used to measure the concentration of Chloride (Cl) in aqueous samples.

SKU: CL-BTA Categories: ,


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.

Range (concentration): 1 to 35,000 mg/L (or ppm)
Reproducibility (precision): ±10% of full scale (calibrated 10 to 1000 mg/L)
Interfering ions: CN–, Br–, I–, OH–, S2–, NH3
pH range: 2–12 (no pH compensation)
Temperature range: 0–80°C (no temperature compensation)
Electrode slope: –56 ±3 mV/decade at 25°C
Electrode resistance: 1 to 5 MΩ
Immersion: 2.8 cm
Electrode length: 125 mm
Body diameter: 12 mm
Cable length: 100 cm

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
Polishing Strips
User manual

Electrode Support (ESUP)

Electrode Storage Bottles (BTL-ES)
Standard Cl ISE Solution ()

User Manual:
Warranty: 5-year limited warranty (consumables excluded)