CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Back Catalog number: 6210129 Availability: In the manufacturer's stock Price on request - + Recommended MI59P EC/TDS/Temp probe for EC59 and EC60 Price on request MA923D/1 pH/ORP/Temp amplified probe MA923D/1 Price on request HI1143B pH elektroda na fluoridové lázně,Hanna Instruments Price on request