"Negodki" > wrote in message
...
>
> Perhaps one or both refractometer's were not calibrated properly for the
> temperature of the must?
>
Mine's ATC. Stood in the garage and calibrated at probably 60 ambient. In
any event, I doubt you'd get a difference of 1.5 to 2.0 due to poor
calibration. Could my chintzy refractometer be that inaccurate? Do folks
ever take their refractometers with them to the juicehouse, so as to check
the Brix for themselves?