I've used a hydrometer since I started brewing, but lately it's proven somewhat unreliable. That's led me to consider a refractometer. I realize that a refractometer is easy to use, and when compared with a hydrometer, only requires a fraction of the sample size. But while the refractometer is great for OG readings, because alcohol bends light at a different ratio than sugar does, to determine FG readings, the refractometer requires the use of a calculation to factor in the presence of alcohol in the sample. All this leads me to the question: Does a Hannah Instruments (Model HI 96841) digital refractometer produce an accurate FG reading without needing to calculate the presence of alcohol in the sample? For $180 it seems like it should have that capability, but I can't tell from their online ad. If it doesn't make this calculation why would the Hannah digital be worth the expense when you can get a much cheaper refractometer, with ATC, for far less?