CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Back Catalog number: 6210129 Availability: In the manufacturer's stock Price on request - + Recommended MA812/2 Conductivity/TDS probe with 2meter cable(MC 310). Price on request MA919B/1 Glass pH electrode, refillable, BNC, 1m Price on request MA830R Stainless steel temperature probe for MW102. Price on request