The Go Direct Potassium Ion-Selective Electrode BNC is a BNC-terminated electrode used to measure the concentration of potassium (K⁺) ions in aqueous samples. Requires a Go Direct^® Ion-Selective Electrode Amplifier. The Go Direct Potassium Ion-Selective Electrode BNC 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.

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.

Specifications

• Range (mV):
  • Go Direct^® Ion-Selective 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: 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)

What's Included

• Go Direct 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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