Why can I not take my final fermented gravity reading with my refractometer? I have read somewhere that you can if u do some calculation. Any explanations or suggestions would be much appreciated
I have not heard of any calculation but the reason is because the alcohol in the beer makes the reading way off. You have to have a hydrometer to test FG.
You can use this calculator http://seanterrill.com/2012/01/06/refractometer-calculator/ but I would still double check your f.g. with your hydrometer. I've used it before and it seems to be right on with my hydrometer. So give it a try.
Alcohol may be man's worst enemy, but the bible says love your enemy. - Frank Sinatra
you all rock ! - thanks