CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Back Catalog number: 6210129 Availability: In the manufacturer's stock Price on request - + Recommended SE220 Double junction pH electrode SE220 Price on request 18901215 84μS/cm 500mL Conductivity Solution, one bottle 38,19 € SE520 Conductivity/TDS probe with 1meter cable SE520 Price on request