pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended 52002547 pH Sensor InPro3250/120/PT100 Price on request MA921B/2 Double junction ORP platinum electrode MA921B/2 Price on request MA991B/1 Combined glass pH electrode MA991B/1 Price on request