Get one of these and that saves all the confusion.
http://www.craftbrewer.com.au/shop/details.asp?PID=952
Chappo
So:
If I am reading 5.5-5.6 in my cooled sample I'm right in the zone?
That's my reading of it.
In which case, if peple are using test strips, which presumably cool down very quickly, what reading should they be looking for?????
Does the strip remember the colour at the temperature it was dipped, or does it shift its reading as it cools, meaning that a reading of 5.2 as its sitting on the bench is actually too low??
Thats just a device that gives you a number and does nothing to help with confusion about what temp the ph is quoted at in any given text and what the number SHOULD be at any given temp.Get one of these and that saves all the confusion.
http://www.craftbrewer.com.au/shop/details.asp?PID=952
Chappo
Yorg,With all the stress on getting into an acceptable zone, its puzzling why this is not a settled well understood peice of home brewing knowlege.
Jayse, the pH meter Chappo suggested is temp corrected (it has a temp probe included) and pH displayed is what it is as long as you stick it in a solution within it's range. Mine is 0-50 degrees.
Quite right. Look for a reading of 5.5.Your pretty much spot on there I think but I would go the other way with the 'assuming' and assume the compensaton doesn't work well, if you think about it its gotta work better taking the compensation part out of the picture and just take the reading with a room temp(25c) sample.
I am sure some people will argue there is nothing wrong with the ATC.
The way I think the compensation works is it is giving you a reading as if the sample was at room temp(or within a range?) no matter what the temp of the actuall sample is, so for mash PH you have to subtract .3 from it.
So for a ph of 5.2 the meter should be reading 5.5, I am pretty sure some people are not taking this into account.
So yes I think your right, the best way to use it would be to cool to room temp for reading, but its minus .3 for mash temp not add as you posted (i think you got that sorted just made a mistake in your posting).
I am prepared to bet money on lots of people being confused about this.
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