CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Back Catalog number: 6210129 Availability: In the manufacturer's stock Price on request - + Recommended 52002987 pH Sensor InPro4260/120/PT1000 Price on request MA812/2 Conductivity/TDS probe with 2meter cable(MC 310). Price on request SE520 Conductivity/TDS probe with 1meter cable SE520 Price on request