Combined glass pH electrode MA991B/1 Back Catalog number: MA991B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MA917B/1 Comb glass pH electrode, DJ, refill, BNC, 1m Price on request MA915B/2 pH glass electrode for with 2meter cable. Price on request LCL-30-3 2M Lithium Chloride Electrolyte, 3 x 30ml Price on request