Ammonium Sensor

The ammonium sensor is an ion-selective electrode (ISE) that is selective for the ammonium ion (NH₄ ⁺). It is a double-junction combination ISE with a silver/silver-chloride reference half-cell, PVC sensing membrane, and reference electrolyte gel. It measures the concentration in parts per million of ammonium ion in solution (calculated as nitrogen, ppm as N).

Chloride Sensor

The chloride sensor is an ISE that is selective for the chloride ion (Cl^–). It is a double-junction combination ISE with a silver/silver-chloride reference half-cell,

solid-state sensing electrode, and reference electrolyte gel. It measures the concentration in parts per million of chloride ion in solution (ppm Cl^–).

Nitrate Sensor

The nitrate sensor is an ISE that is selective for the nitrate ion (NO₃ ^–). It is a double-junction combination ISE with a silver/silver-chloride reference half-cell, PVC membrane, and reference electrolyte gel. It measures the concentration in parts per million of nitrate ion in solution (calculated as nitrogen, ppm as N).