features: • Robust digital valve for ion-selective measurement of ammonium and nitrate (in situ) • For connection to the IQ Sensor Net System • For installation of the reference electrode VARiON® Ref • the installation of two electrodes and a compensation electrode • fully automatic compensation of interference ions • Measuring ranges: 0.1-1000 mg / l NH4-N and NO3-N • Compensation range: 1 - 1000 mg / l K + • Operating: 0 ° C. .. 40 ° C, pH range: 4 .. 8.5 pH delivery: • faucet VARiON® Plus 700 IQ • Reference electrode VARiON® Plus Ref • measuring electrodes VARiON® plus NH4 and NO3 VARiON® Plus • compensation electrode VARiON® Plus K (potassium) • Connection cable sold separately SACIQ