pH Sensor InPro3250/120/PT100 Back Catalog number: 52002547 Availability: In the manufacturer's stock Price on request - + Recommended 18901183 DREF02 Reference electrode 41,44 € 18901204 PH1.68 500mL 1.68pH, one bottle 34,94 € 18901210 1413μS/cm 250mL Conductivity Solution, one bottle 20,31 €