pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended MA812/2 Conductivity/TDS probe with 2meter cable(MC 310). Price on request MA814DB/1 EC/TDS/Temp probe for Mi170 Price on request SE510 Conductivity/TDS probe with 1meter cable SE510 Price on request