Oakton 27504-22 Combination Ion-Selective Electrode (ISE), Nitrate

• Ion-selective electrode: Nitrate (NO3–)
• PVC membrane type
• Concentration range: 7 x 10–6 to 1.0 M (0.5 to 62,000 ppm)
• Temperature/pH range†: 0 to 50°C/2.5 to 11
• Interferences‡: ClO4–, I–, CN–, BF4–

Electrodes are double-junction combination ion-selective electrodes and are convenient to use in places where two electrodes won’t fit. Use with a meter that has a resolution of 0.1 mV for the most accurate results; a meter with direct readings in ppm is preferred.

Economy Epoxy Electrodes have a durable epoxy body and are well-suited for portable field applications. The outer reference chamber is silver-free and resists contamination. These electrodes are refillable.