Combined pH electrode MA920B/1 Back Catalog number: MA920B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MI58P pH/ORP/Temp probe for pH58 Price on request MA840 Polarographic DO probe with 3m cable Price on request MA916B/1 Combined glass pH electrode, refill, BNC, 1m Price on request