[quote=“cskollmann”][quote=“Shanhorn”]I have been using this SG converter from Brewmasters warehouse. Fill in the blanks & bam figures for ABW & ABV & ACTUAL Final Gravity are given.
http://www.brewmasterswarehouse.com/pro ... h-sg-scale
When I use the paper scale from my broken Hydrometer the figures come out as 1.052=6.8%, 1.029=3.8% leaving only 3%ABV.
Now I thought I read it wrong, The FG the OP has given is actually high for a FG, the low reading of 1.012 is a good FG. Why would the converter link I posted be so far off??[/quote]
I think you’re misunderstanding how to use the BMW calculator. It is meant for correcting a refractometer FG reading, where the alcohol content and the sugar content of the sample both affect the refraction. The calculator corrects by subtracting the alcohol effect out. When you input 1.052 as the SG and 1.012 as the FG, that calculator is assuming you actually read a refractometer at 1.012 and then taking that FG number and converting it to an actual FG of 0.9886. Going from 1.052 to 0.9886 would in fact produce an 8.3% ABV. If one had a beer finish at 1.012 on a hydrometer, the refractometer would read 1.027.[/quote]
Now this is interesting… I’m using a refractometer for my gravity readings. Using the above link It indicates a 4.89% ABV - much coser to what I was expecting… Perhaps I’ve found my answer? If so, I will not be able to use iBrewMaster for my calculations in the future. Hmmm.