Nitrate ISE (NO3-) Probe

Product Code: PS-3521


This ISE connects to the Wireless pH Sensor and allows students to measure the potential and determine the concentration of nitrate ions in an aqueous solution.

This ISE utilizes a standard PVC membrane. As with all ISE implementing this design, the lifespan of the membrane is limited. For this reason, we offer replacement sensor modules (PVC matrix sensor type) which allow you to periodically replace the module, rather than the whole electrode.

PASCO Ion Selective Electrodes are industrial-quality probes that give excellent results when properly used. Operation of these Ion Selective Electrodes assumes training in the safe handling of flammable, caustic and corrosive chemicals and a working knowledge of serial dilution and calibration procedures. For this reason, they are not recommended for use by elementary or middle school students.

What’s Included

  • 1x 2m cable


Range 1 to 62,000 ppm or mg/L
pH range 2.5-11
Electrode slope 55 ± 3 mV/ decade
Interferences ClO4-, I-, ClO3-,
Electrode type PVC Membrane

Supporting Documents

Nitrate ISE Probe Manual

Safety Sheets

Nitrate ISE – Safety Data Sheet

Nitrate Reference Fill Solution – Safety Data Sheet

Nitrate Standard Solution – Safety Data Sheet