pH Sensor InPro3250/120/PT100 Back Catalog number: 52002547 Availability: In the manufacturer's stock Price on request - + Recommended SE510 Conductivity/TDS probe with 1meter cable SE510 Price on request 52005384 pH Sensor InPro4800i/SG/225 Price on request MA921B/1 Double junction orp platinum electrode MA921B/1 Price on request