Combined glass pH electrode MA991B/1 Back Catalog number: MA991B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MA919B/1 Glass pH electrode, refillable, BNC, 1m Price on request MI59P EC/TDS/Temp probe for EC59 and EC60 Price on request SE510 Conductivity/TDS probe with 1meter cable SE510 Price on request