The Vernier Potassium Ion-Selective Electrode BNC Connector is a BNC-terminated electrode used to measure the concentration of potassium (K⁺) ions in aqueous samples. Use with Vernier interfaces requires the Electrode Amplifier. Also compatible with Go Direct^® Electrode Amplifier and Go Direct^® Ion-Selective Electrode Amplifier.

Specifications

• Range (mV):
  • Electrode Amplifier: -450 mV to +1100 mV
  • Go Direct^® Electrode Amplifier: -1000 mV to +1000 mV
• Range (concentration): 1 to 39,000 mg/L (or ppm)
• Reproducibility (precision): ±30mV
• 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: +58 ±3 mV/decade at 25°C
• Electrode resistance: 100–200 kΩ
• Minimum sample size: must be submerged 2.8 cm (1.1 in)

Download the user manual for full specifications

Requirements

The Potassium Ion-Selective Electrode BNC connects via BNC to one of our Electrode Amplifiers.

What's Included

• Potassium Ion-Selective Electrode with BNC terminated end, packed with a storage bottle
• 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

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