pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended MA814DB/1 EC/TDS/Temp probe for Mi170 Price on request MA905B/3 Combination pH electrode MA905B/3 Price on request MA923B/3 Redox Epoxy electrode MA923B/3 Price on request