Combined glass pH electrode MA991B/1 Back Catalog number: MA991B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MI58P pH/ORP/Temp probe for pH58 Price on request 6210129 CSKC50M Reagecon 50,000 µS/cm Conductivity Standard, 500ml Price on request MA911B/2 Double junction pH electrode MA911B/2 Price on request