Combined glass pH electrode MA991B/1 Back Catalog number: MA991B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MA923B/3 Redox Epoxy electrode MA923B/3 Price on request MA921B/2 Double junction ORP platinum electrode MA921B/2 Price on request 51343101 pH electrode InLab Expert Pro Price on request