Oakton 27502-49 Ion-Selective Electrode (ISE), Water Hardness, Double-Junction, BNC

• Ion-selective electrode: Water Hardness (Ca⁺²/Mg⁺²)
• Type: PVC membrane
• Concentration range: 10–5 to 1.0 M (0.4 to 40,000 ppm as Ca+2)
• Temperature/pH range†: 0 to 50°C/5 to 10
• Interferences‡: Cu+2, Zn+2, Ni+2, Fe+2

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.

Laboratory Glass Electrodes
Laboratory Glass Electrodes are double-junction in design, with a glass body that provides high-quality measurements for your laboratory applications. Improved glass seal enhances performance and reliability. Sealed inner junctions and refillable outer junctions accommodate special reference fill solutions - ideal for low-concentration measurements. Use electrodes with a meter that has a resolution of 0.1 mV for the most accurate results. Many meters in our ''pH/Ion Meters'' section have 0.1 mV resolution; several also give direct readings in ppm. For monitoring ions not listed below, call our Application Specialists for more electrode application information.