Combined Epoxy pH electrode MA913B/3 Back Catalog number: MA913B/3 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MA814D/1 EC/TDS/Temp probe for Mi306 Price on request MA812/2 Conductivity/TDS probe with 2meter cable(MC 310). Price on request MA840 Polarographic DO probe with 3m cable Price on request