Oakton® Ion Selective Electrodes

A wide variety of ion selective electrodes are availabe to suit a wide array of applications. Select from four electrode types: membrane, solid-state, gas sensing, and glass bulb; typical response time is 20 to 30 seconds. Epoxy-body ISEs are either single- or double-junction, and the glass-body type is double junction. Use these Ion Selective Electrodes (ISEs) with any ion meter, or with any meter with 0.1 mV resolution. All ISEs feature a BNC connector and 3-ft cable.
Image(s) are representative of the product group and not necessarily the individual product.

Body Ion Material: Epoxy
Measuring Range: Fluoride (F^-)
Range: OH^-
Reference Cell: Saturated to 1 x 10^-6 M
Interfering Ions: Saturated to 0.02 ppm

Body Ion Material: Epoxy
Measuring Range: Sodium (Na⁺)
Range: H⁺, K⁺, Li⁺
Reference Cell: 1 to 1 x 10^-5 M
Interfering Ions: 23,000 to 0.2 ppm

Body Ion Material: Glass
Measuring Range: Fluoride (F^-)
Range: OH^-
Reference Cell: Saturated to 1 x 10^-6 M
Interfering Ions: Saturated to 0.02 ppm

Body Ion Material: Glass
Measuring Range: Sodium (Na⁺)
Range: H⁺, K⁺, Li⁺
Reference Cell: 1 to 1 x 10^-5 M
Interfering Ions: 23,000 to 0.2 ppm

Body Ion Material: Cadmium (Cd⁺²)
Measuring Range: 11,200 to 0.01 ppm
Range: 0 DEG - 80 DEG C; 2 - 12 pH
Reference Cell: 1 M KNO₃ double junction
Interfering Ions: Ag+, Hg+2, Cu+2, High Pb+, High Fe+

Body Ion Material: Calcium (Ca⁺²)
Measuring Range: 40,000 to 0.2 ppm
Range: 0 DEG - 50 DEG C; 3 - 10 pH
Reference Cell: 4 M KCl double junction
Interfering Ions: Cu⁺², Hg⁺², Ni⁺², Pb⁺²

Body Ion Material: Copper (Cu⁺²)
Measuring Range: 6,350 to 6.4 x 10^-4 ppm
Range: 0 DEG - 80 DEG C; 2 - 12 pH
Reference Cell: 1 M KNO₃ double junction
Interfering Ions: Ag⁺², Hg⁺², High Cl^-, Br^-, Fe⁺², Cd⁺²

Body Ion Material: Epoxy
Measuring Range: Lead (Pb⁺²)
Range: Ag⁺, Hg⁺², Cu⁺², High Cd⁺², High Fe⁺²
Reference Cell: 0.1 to 1 x 10^-6 M
Interfering Ions: 20,700 to 0.2 ppm

Body Ion Material: Epoxy
Measuring Range: Nitrogen Oxide (NO_x)
Range: CO₂, SO₂, HF, acetic acid
Reference Cell: 5 x 10^-3 to 5 x 10^-6 M
Interfering Ions: 220 to 0.2 ppm

Body Ion Material: Epoxy
Measuring Range: Silver Sulfide (Ag⁺/S^-2)
Range: Hg⁺², Hg⁺
Reference Cell: Ag⁺ 1 to 1 x 10^-7 M; S^-2 1 to 1 x 10^-7 M
Interfering Ions: Ag⁺ 107,900 to 0.01 ppm; S^-2 32,100 to 0.003 ppm

Body Ion Material: Epoxy
Measuring Range: Water Hardness (Ca⁺², Mg⁺²)
Range: Cu⁺², Zn⁺², Ni⁺², Fe⁺²
Reference Cell: 1 to 5 x 10^-5 M
Interfering Ions: 40,000 to 0.4 ppm

Body Ion Material: Glass
Measuring Range: Lead (Pb⁺²)
Range: Ag⁺, Hg⁺², Cu⁺², High Cd⁺², High Fe⁺²
Reference Cell: 0.1 to 1 x 10^-6 M
Interfering Ions: 20,700 to 0.2 ppm

Body Ion Material: Glass
Measuring Range: Silver Sulfide (Ag⁺/S^-2)
Range: Hg⁺², Hg⁺
Reference Cell: Ag⁺ 1 to 1 x 10^-7 M; S^-2 1 to 1 x 10^-7 M
Interfering Ions: Ag⁺ 107,900 to 0.01 ppm; S^-2 32,100 to 0.003 ppm

Body Ion Material: Glass
Measuring Range: Water Hardness (Ca⁺², Mg⁺²)
Range: Cu⁺², Zn⁺², Ni⁺², Fe⁺²
Reference Cell: 1 to 5 x 10^-5 M
Interfering Ions: 40,000 to 0.4 ppm

Body Ion Material: Epoxy
Measuring Range: Nitrate (NO^3-)
Range: ClO₄^-, I^-, CN^-, BF₄^-
Reference Cell: 1 to 7 x 10^-6 M
Interfering Ions: 62,000 to 0.5 ppm

Body Ion Material: Glass
Measuring Range: Nitrate (NO^3-)
Range: ClO₄^-, I^-, CN^-, BF₄^-
Reference Cell: 1 to 7 x 10^-6 M
Interfering Ions: 62,000 to 0.5 ppm

Epoxy body
Body Ion Material: Ammonia NH3
Measuring Range: 17,000 to 0.01 ppm
Range: 0 DEG - 50 DEG C; above pH 11
Reference Cell: 0.1 M NH₄Cl; double junction
Interfering Ions: Volatile amines

Body Ion Material: Ammonium NH4
Measuring Range: 18,000 to 0.1 ppm
Range: 0 DEG - 50 DEG C; 4 - 10 pH
Reference Cell: 0.1 M NaCl double junction
Interfering Ions: K+

Body Ion Material: Epoxy
Measuring Range: Perchlorate (ClO₄^-)
Range: None significantly
Reference Cell: 1 to 7 x 10^-6 M
Interfering Ions: 98,000 to 0.7 ppm

Body Ion Material: Epoxy
Measuring Range: Potassium (K⁺)
Range: Cs⁺, NH₄⁺
Reference Cell: 1 to 1 x 10^-6 M
Interfering Ions: 39,000 to 0.04 ppm

Body Ion Material: Glass
Measuring Range: Perchlorate (ClO₄^-)
Range: None significantly
Reference Cell: 1 to 7 x 10^-6 M
Interfering Ions: 98,000 to 0.7 ppm

Body Ion Material: Glass
Measuring Range: Potassium (K⁺)
Range: Cs⁺, NH₄⁺
Reference Cell: 1 to 1 x 10^-6 M
Interfering Ions: 39,000 to 0.04 ppm

Glass body
Body Ion Material: Ammonium NH4
Measuring Range: 18,000 to 0.1 ppm
Range: 0 DEG - 50 DEG C; 4 - 10 pH
Reference Cell: 0.1 M NaCl double junction
Interfering Ions: K+

Body Ion Material: Epoxy
Measuring Range: Surfactant (X⁺, X^-)
Range: similar types of surfactants
Reference Cell: 5 x 10^-2 to 1 x 10^-5 M
Interfering Ions: 12,000 to 1.0 ppm

Body Ion Material: Chloride (Cl^-)
Measuring Range: 35,500 to 1.8 ppm
Range: 0 DEG - 80 DEG C; 2 - 12 pH
Reference Cell: 1 M KNO₃ double junction
Interfering Ions: OH^-, S^-2, Br^-, I^-, CN^-

Body Ion Material: Bromide (Br)
Measuring Range: 79,000 to 0.4 ppm
Range: 0 DEG - 80 DEG C; 2 - 14 pH
Reference Cell: 1 M KNO₃ double junction
Interfering Ions: I-, CN-, S-2, High Cl-, or High NH3

Body Ion Material: Cyanide (CN^-)
Measuring Range: 260 to 0.13 ppm
Range: 0 DEG - 80 DEG C; 11 - 13 pH
Reference Cell: 1 M KNO₃ double junction
Interfering Ions: S^-, I^-, Br^-, Cl^-