There were two recent threads in which this was discussed. A number of
people had very poor experience with the Checker1, and a few were happy with
it. But it is not really accurate enough for pH level testing, although it
is apparently ok for acid titration. You can get a model PHEP5 (made by the
same company) for about $70 (from www.piwine.com and others), and it seems
to be worth the extra investment.


I have both of these pH meters and frankly, they're both adequate. It gets me
to within 0.1 or 0.15 of the true value (when I check them against each other
and against themselves). It's easier to lose the top of the cheaper model
which holds in the solution between uses. After making wine for about 3 years,
I've gotten to the point where if I can get wine between 3.2 and 3.6, then any
further fine tuning seems to not make much diference (and usually screws things
up).

Lee