The I9121 Ammonia Combination ISE can measure ammonia and ammonium concentration in aqueous solutions.
The Agilent I9121 Ammonia Combination ISE is a sensor designed to measure ammonia and ammonium concentrations in aqueous solutions. It requires use with the 3200I Ion Meter or similar meters and features a concentration range of 10⁻¹ to 1×10⁻⁶ mol/L. The device includes safety warnings regarding chemical burns from probe solution and glass handling.
| Concentration range | 10⁻¹ to 1×10⁻⁶ mol/L |
|---|---|
| Temperature range | 0 to 50 °C |
| Probe impedance | <1500 MΩ |
| Reference type | Ag/AgCl |
| Cable length | 1000 mm |
The probe measures concentrations from 10⁻¹ to 1×10⁻⁶ mol/L.
Add alkalizer until the solution's pH value is controlled in the range of 11-12.
Check that the mV value changes by more than 52 mV when calibration solution concentration changes ten times.