pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended MA851D/1 pH/EC/TDS/Temp. amplified probe, 1m Price on request MA911B/2 Double junction pH electrode MA911B/2 Price on request MA914BR/1 pH/Temp amplified probe with 1m cable for Mi105 Price on request