pH Sensor InPro4260i/SG/225 Back Catalog number: 52005382 Availability: In the manufacturer's stock Price on request - + Recommended MA814DB/1 EC/TDS/Temp probe for Mi170 Price on request MA917B/1 Comb glass pH electrode, DJ, refill, BNC, 1m Price on request MA9305 Pack of 100 x 1.4V batteries. Price on request