pH Sensor InPro4260/120/PT1000 Back Catalog number: 52002987 Availability: In the manufacturer's stock Price on request - + Recommended SE520 Conductivity/TDS probe with 1meter cable SE520 Price on request 52005384 pH Sensor InPro4800i/SG/225 Price on request MA921B/1 Double junction orp platinum electrode MA921B/1 Price on request