pH Sensor InPro4260i/SG/225 Back Catalog number: 52005382 Availability: In the manufacturer's stock Price on request - + Recommended 18901194 PH9.18 250mL 9.18pH, one bottle 12,74 € 18901215 84μS/cm 500mL Conductivity Solution, one bottle 37,41 € MA814D/1 EC/TDS/Temp probe for Mi306 Price on request