The 1957 Cadillac of portable pH meters.If you're an All-Grain brewer, water pH is crucial for your brew. Having the correct pH in your mash and sparge water helps reduce the chance of off-flavors, improves conversion, and ensures optimal yeast health in the fermentation. But paper test strips can be maddening.Range of -2 to 16 pH and 23 to 140F with 0.01 pH and 0.1F resolution and +/- 0.05 pH and 1F accuracy. Automatic single- or double-point calibration and automatic temperature correction from 23 to 140F. Further bells and whistles are a larger digital display than our other meters, auto power-off, repleacable electrode, and a hold feature that allows you to remove the probe from the solution to more easily read the display.Also includes one set of calibration solution sachets. Frequent calibration will ensure you always have the most accurate read on your water.Please note that electrodes must be rinsed after use and stored in electrode storage solution to ensure proper function of the meter.