CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Back Catalog number: 6210129 Availability: In the manufacturer's stock Price on request - + Recommended MA814D/1 EC/TDS/Temp probe for Mi306 Price on request 18901199 PH4.00 500mL 4.00pH, one bottle 20,35 € 18901185 Cable Extension cable 4,48 €