Get current pricing for Corning, Corning-522-ID Corning 450 Ph/ion Meter. Ph Range -1.999 To 19.999. Mv Range +/-1999.9. Temp Range -30 To 130 Deg C. Conc. Range 0.0001 To 19999. Timer 0 To 2 . Product Category: Lab Equipment, Sub Category: Other: