Combined glass pH electrode MA991B/1 Back Catalog number: MA991B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MI58P pH/ORP/Temp probe for pH58 Price on request PC-5000-1177 1/4" ID Peristaltic Pump Santoprene Tubing (TPE55S Price on request MC720 MC720 Controller kit Price on request