Combined pH electrode MA920B/1 Back Catalog number: MA920B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended 1575-500ML CHEMSOLUTE ready-to-use conductivity sol. 1413 µS/cm, 500ml (THG) 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