pH Sensor InPro3250/120/PT100 Back Catalog number: 52002547 Availability: In the manufacturer's stock Price on request - + Recommended MA911B/2 Double junction pH electrode MA911B/2 Price on request MA812/2 Conductivity/TDS probe with 2meter cable(MC 310). Price on request SE510 Conductivity/TDS probe with 1meter cable SE510 Price on request