Hi,
First of all i have calibrated my ph meter every time before use, second i lowered ph of strike water with lactic acid from 7.8 to 6.5 which resulted in mash ph 5.9. Next time i added a bit more acid, ph was 5.8. I kept adding more acid till i reached 5.3 which was good enough for me. Next brew i added same amount of acid to strike water. After mashing in(after 30min) i measured mash ph and it was 5.3. i saved a sample of acidified strike water which had ph of 4.2. Thought i made a mistake, so i measured again next time brewed and ph result were the same.
Is this normal? As far as i understand mash ph the grain should lower ph not raise it.
First of all i have calibrated my ph meter every time before use, second i lowered ph of strike water with lactic acid from 7.8 to 6.5 which resulted in mash ph 5.9. Next time i added a bit more acid, ph was 5.8. I kept adding more acid till i reached 5.3 which was good enough for me. Next brew i added same amount of acid to strike water. After mashing in(after 30min) i measured mash ph and it was 5.3. i saved a sample of acidified strike water which had ph of 4.2. Thought i made a mistake, so i measured again next time brewed and ph result were the same.
Is this normal? As far as i understand mash ph the grain should lower ph not raise it.