Milwaukee pH55 pH/Temp MeterIf 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. This is the same pH meter as the pH56 model, but with a lower resolution (0. 1 pH) and a more affordable price tag. Range of 2 to 16 pH and 32 to 122F. 0. 1F resolution and + 0. 1 pH