- Mar 7, 2013
- Reaction score
I'm looking at buying a refractometer for brewing my beer. In doing so I've learned a little about SG and brix scales, and the calculation between the two. I've also seen many people comment that the SG scale in refractometers is correct only at 1.000, with an increasing error relative to three brix scale. This is supported by the calculation. I've heard it explained that refractometers were designed for brix, then the SG scale was added, but not accurately. And every dual scale refractometer has the same scale, which makes me suspect that maybe there is some validity to it. So tonight I played with the Brewer's Friend calculator, compared it to my hydrometer, and found that not only do the refractometer scales appear to not match up, but my hydrometer scales don't match up either. So now I'm not sure what to believe. My beer turns out pretty good and gets me looped, so this is all semantics of course, but I'm curious to hear what others think or know about this. Thanks in advance!