Inconsistent pH readings...

[redzim]

@bluesman

How old is your pH meter probe?

They last about 18-24mos if kept clean and wet in the proper storage solution.

Anyway, I check the mash pH about 10 min into the mash and the sparge after stirring for 2 min. I always calirate with 4.01 and 7.0 prior to the mash and the sparge. I typically get readings within +/-.02 upon calibration, so you either have a failing probe or stray voltage in your system. I recommend contacting Milwaukee and talking to their tech support folks.

One other thing to consider is your sampling temp. I always chill the mash sample down to RT prior to taking a reading.

Meter and probe are less than 1yr old… has been stored in proper storage solution for the duration… as I said, I also cool samples to around 65-80F before taking a reading…    so I guess a call to Milwaukee is next…

-red