The unit requires four 1.5V AA batteries which provide approximately 300 hours of continuous use. The Hanna meter switches off after eight minutes of inactivity to preserve battery life. The meter also comes with an 'HI 73127 pH electrode', an electrode removal tool, and instructions on how to...
A sparge water pH below 6.0, ideally closer to the mash pH, minimizes the risk of excessive tannin extraction. Tannins, which are phenolic compounds present in grain husks, can impart a harsh, astringent taste to the beer if extracted in large quantities. This is particularly important for lig...