Brewpal tells me 5% ABV
NB tell me 7.8% ABV
I use Brewpal as well as Northern Brewer's refractometer calculator http://www.northernbrewer.com/refractometer-calculator/
to measure Brix. You would think the numbers would come out the same but I'm getting two numbers. Unfortunately my refractometer only reads in Brix but I would still like to see where I'm at post fermentation. ABV and Final gravity.
Most recent brew (Saison):
OG 14.80 Brix
FG 6.00 Brix
Data according to Brewpal:
14.80 Brix down to 6 Brix = 5%
1.063 down to 1.025= 5% ABV
Data according to Northern Brewer's During and After Fermentation calc.
14.80 Brix down to 6 Brix = 1.001 FG
Data according to Northern Brewer's ABV calc.
Current Brix 6.00
Current Gravity 1.001
Any ideas why they are different? A fault in an algorithm somewhere?