Review Details

5.2 Mash pH Stabilizer - 1 lb.

5.2 Mash pH Stabilizer - 1 lb.

Product Review (submitted on August 18, 2011):
I have made at least 14 5-gallon batches using this stuff. It keeps the pH of the mash at 5.2, but only if your starting water is reasonably close to 5.2. The well water I use is very soft with a pH of around 5.9-6.0. After adding this to my pre-heated water for mash, the pH of that water is still about 5.9. Once it sits in the mash tun with some grain for 5 minutes or so the pH locks to 5.2 and stays there even when the grains are well rinsed and the sparge is over. I usually get around 70-75% mash efficiency using this, the batches I made before using this I would get about 65%. Not a huge difference, but I think it is worth it.

It's a buffer solution, with a certain buffer capacity. If you dump it in to water with a pH of 8.0, you are asking too much of that buffer and it's not going to work.