william_shakes_beer
Well-Known Member
When taking a refractometer reading once alcohol is present, it is necessary to use the OG and the refract reading to apply a correction factor to arrive at the correct SG reading. I assume this is because the optical properties of the wort/green beer are changed by the presence of *some* alcohol.
Why is a similar correction factor not required when taking a hydrometer reading?
Given:
OG 1.055
SG 2 weeks 1.030
May well have the same actual SG but render a different apparent reading due to less alcohol present as:
OG 1.040
SG 2 weeks 1.025
Am I missing soimething? This is a scholarly question.
Why is a similar correction factor not required when taking a hydrometer reading?
Given:
OG 1.055
SG 2 weeks 1.030
May well have the same actual SG but render a different apparent reading due to less alcohol present as:
OG 1.040
SG 2 weeks 1.025
Am I missing soimething? This is a scholarly question.