When entering the information into the refractometer tools is the OG number supposed to be from wort pre-boil or after boil?
If I enter the pre-boil gravity reading I took with my hydrometer of 1.049 and my first fermenting refractometer reading of 9.23 brix, the results line up with the fermenting hydrometer reading I took at the same time. >1.028<. But if I enter the post boil reading I took with my hydrometer of 1.062 the results in the refractometer tools are different. >1.021< That would mean my hydrometer reading during fermentation is wrong.
Which OG number should I use and what would cause my hydrometer to read incorrectly? Maybe CO2 floating the hydrometer?
If I enter the pre-boil gravity reading I took with my hydrometer of 1.049 and my first fermenting refractometer reading of 9.23 brix, the results line up with the fermenting hydrometer reading I took at the same time. >1.028<. But if I enter the post boil reading I took with my hydrometer of 1.062 the results in the refractometer tools are different. >1.021< That would mean my hydrometer reading during fermentation is wrong.
Which OG number should I use and what would cause my hydrometer to read incorrectly? Maybe CO2 floating the hydrometer?