Our Ion-Selective Electrodes (ISEs) are double junction combination electrodes and do not require an external reference electrode. This model has a BNC connector and is compatible with meters manufactured by almost all vendors.

The Ammonium Ion-Selective Electrode measures levels of ammonium ions. It can also indicate aqueous ammonia levels if sample solutions are acidified to convert NH3 to NH4+.

Electrodes are combination-style, non-refillable, and gel-filled.

It is important for you to know that these ISE membranes, like all other PVC ISE membranes, have a limited life expectancy; however, the replaceable module of these ISEs allows you to simply discard the used one, and replace it with a new module. We recommend that you do not purchase replacement modules far in advance of their expected time of use, as their life expectancy is limited as well.

Two calibration standards and a short-term soaking bottle are included.

SPECIFICATIONS:

Range: 0.10 to 18,000 mg/L or ppm (5.5 X 10-6 M to 1.0 M)

Resolution: (% of reading, low scale reading, high scale reading): 0.7% of reading (0.10 ±0.0007 or 18,000 ±130 mg/L)

pH Range: 4 to 10

Interfering Ions: K+

Electrode Slope: +56 mV/decade

Approximate Calibration Voltages: High (100 mg/L) 2.1 V Low (1 mg/L) 1.3 V

Electrode Resistance: 1 to 4 MΩ-Reproducibility: ± 5% of reading

Temperature range (can be placed in): 0 to 50°C (no temperature compensation)

Minimum immersion: 1 inch

Electrode Length: 155 mm

Body Diameter: 12 mm

Cap Diameter: 16 mm

Cable Length: 100 cm