CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Back Catalog number: 6210129 Availability: In the manufacturer's stock Price on request - + Recommended MA917B/1 Comb glass pH electrode, DJ, refill, BNC, 1m Price on request HI1143B pH elektroda na fluoridové lázně,Hanna Instruments Price on request MA811/2 Conductivity/TDS probe with 2meter cable (MC410). Price on request