pH Sensor InPro4800i/SG/225 Back Catalog number: 52005384 Availability: In the manufacturer's stock Price on request - + Recommended 6210129 CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Price on request SE220 Double junction pH electrode SE220 Price on request SE600 Combination probe SE600 Price on request