Pretty sure my refractometer has a dual scale anyways... One side is brix and one is SG. So I dont think ill need to deal with that formula anyway
Even dual scale requires help.
The SG side is not accurate when there's alcohol present, so you still need the formula, a calculator or some kind of software to do it for you.
You need the to enter the OG, and the current brix into the formula to get the actual current SG.
Like this...
The latest version of the LSA was pitched on Monday at 2 pm, with an OG of 1.058, this morning it's Brix reading is 8, which directly looks like it's 1.032, but when I enter it into the calculator, it's actually at 1.015.
If my OG had been 1.040 for example, the calculator would show that the same brix reading of 8 would only give me a current SG of 1.026.
JQ