pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended MA814D/1 EC/TDS/Temp probe for Mi306 Price on request 18901194 PH9.18 250mL 9.18pH, one bottle 12,74 € 18901207 1408μS/cm 250mL Conductivity Solution, one bottle 19,90 €